{"title":"Zapco Amplifiers","description":"\u003cp\u003e\u003cstrong\u003eZapco Amplifiers\u003c\/strong\u003e cover a broad selection of car audio amplifiers from £19, ranging from mono subwoofer units to 2-, 4-, 5- and 6-channel full-range designs and fully integrated DSP amplifiers. Series include the entry-level ST-B, compact ST-D, micro-chassis SQ MINI, Harmony HB II, Z-Series II, AP audiophile and the flagship Reference range.\u003c\/p\u003e\u003cp\u003eSuited to anyone upgrading a factory system or building a dedicated sound quality install, each series offers different power levels, form factors and feature sets. CEN in Beeston, Nottingham carries the range and provides professional fitting at its on-site workshop.\u003c\/p\u003e","products":[{"product_id":"zapco-hb-48ii-4a-dsp-amp-8-channel-dsp-4-channel-class-a-b-power-amplifier","title":"Zapco HB 48 II 4A DSP Amp 8 Channel DSP 4 Channel Class A\/B Power Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 48 II 4A is an 8-channel DSP amplifier from the Zapco Harmony HB II series, combining a 31-band EQ DSP processor with an integrated 4-channel Class A\/B amplifier rated at 4 x 70W (max), with Bluetooth 5.1 streaming and a USB music player built in.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eHB DSP II-R remote\u003c\/a\u003e adds dashboard control of volume, presets, input source and music playback.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDSP: 8 channels, 31-band EQ\u003c\/li\u003e\n\u003cli\u003eAmplifier: 4 channels, Class A\/B, 4 x 70W (max)\u003c\/li\u003e\n\u003cli\u003eInputs: 4-channel high level plus 2-channel RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 8-channel RCA\u003c\/li\u003e\n\u003cli\u003eBluetooth: 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eMusic player: via USB OTG input\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 (L) x 126 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHB 48 II 4A integrated 8-channel DSP and 4-channel Class A\/B amplifier\u003c\/h2\u003e\n\u003cp\u003eThe HB 48 II 4A is a plug and play unit combining an 8-channel DSP with 31-band EQ and a 4-channel Class A\/B amplifier. Inputs are 4-channel high level and 2-channel RCA; outputs are 8-channel RCA.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8-channel DSP with 31-band EQ\u003c\/li\u003e\n\u003cli\u003e4-channel high level inputs\u003c\/li\u003e\n\u003cli\u003e2-channel RCA inputs plus 8-channel RCA outputs\u003c\/li\u003e\n\u003cli\u003ePlug \u0026amp; Play ready\u003c\/li\u003e\n\u003cli\u003eBluetooth 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eOTG (USB) input\u003c\/li\u003e\n\u003cli\u003eMusic player supporting MP2, MP3, MP4, WMA, APE, FLAC, AAC, M4A, WAV, AIF, AIFC\u003c\/li\u003e\n\u003cli\u003ePC and mobile DSP configuration tools\u003c\/li\u003e\n\u003cli\u003eMobile music player app\u003c\/li\u003e\n\u003cli\u003eAmplifier power: 4 x 70W (max)\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 (L) x 126 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eHB DSP II-R remote\u003c\/a\u003e lets you control main and subwoofer volume, select presets and input source, and skip tracks in music player mode — all from your dashboard.\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52257533886730,"sku":"92246","price":249.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ZapcoHB48II4A.jpg?v=1765554087"},{"product_id":"zapco-hb-46ii-4a-dsp-amp-6-channel-dsp-4-channel-class-a-b-power-amplifier","title":"Zapco HB 46 II 4A DSP Amp 6 Channel DSP 4 Channel Class A\/B Power Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 46 II 4A is a 6-channel DSP and integrated 4-channel Class A\/B amplifier from Zapco's Harmony HB II series, featuring 31-band EQ, Bluetooth 5.1 streaming, and a built-in USB music player.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R remote\u003c\/a\u003e adds dashboard control of volume, presets, input source and music player track selection.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDSP: 6 channels, 31-band EQ\u003c\/li\u003e\n\u003cli\u003eAmplifier: 4 channels, Class A\/B, 4 x 70W (max)\u003c\/li\u003e\n\u003cli\u003eInputs: 4-channel high level plus 2-channel RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 6-channel RCA\u003c\/li\u003e\n\u003cli\u003eBluetooth: 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eMusic player: via USB (OTG input)\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 (L) x 126 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHB 46 II 4A integrated 6-channel DSP and 4-channel Class A\/B amplifier\u003c\/h2\u003e\n\u003cp\u003eThe HB 46 II 4A is a plug and play 6-channel DSP with 31-band EQ and an integrated 4-channel Class A\/B amplifier. It accepts 4-channel high-level inputs and 2-channel RCA inputs, and provides 6-channel RCA outputs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e6-channel DSP with 31-band EQ\u003c\/li\u003e\n\u003cli\u003e4-channel high-level inputs\u003c\/li\u003e\n\u003cli\u003e2-channel RCA inputs and 6-channel RCA outputs\u003c\/li\u003e\n\u003cli\u003ePlug \u0026amp; Play ready\u003c\/li\u003e\n\u003cli\u003eBluetooth 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eOTG input (USB memory music player)\u003c\/li\u003e\n\u003cli\u003eSupported formats: MP2, MP3, MP4, WMA, APE, FLAC, AAC, M4A, WAV, AIF, AIFC\u003c\/li\u003e\n\u003cli\u003ePC and mobile DSP configuration tools\u003c\/li\u003e\n\u003cli\u003eMobile Music Player app\u003c\/li\u003e\n\u003cli\u003eAmplifier power: 4 x 70W (max)\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 (L) x 126 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe USB Music Player function supports a wide range of lossless and compressed formats. The optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eHB DSP II-R remote\u003c\/a\u003e allows dashboard control of main and subwoofer volume, preset and source selection, and track navigation.\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52553724330250,"sku":"92375","price":209.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB46II4A3.jpg?v=1770974637"},{"product_id":"zapco-hb-410-ii-8a-dsp-amp-10-channel-dsp-8-channel-class-a-b-power-amplifier","title":"Zapco HB 410 II 8A DSP Amp 10 Channel DSP 8 Channel Class A\/B Power Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 410 II 8A is a 10-channel DSP amplifier from the Zapco Harmony HB II series, combining a 31-band EQ processor with an integrated 8-channel Class A\/B power amplifier rated at 8 x 70W (max), plus Bluetooth 5.1 streaming and USB music playback.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVolume, presets, source and track selection can be controlled from the dash with the optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R remote\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDSP: 10 channels, 31-band EQ\u003c\/li\u003e\n\u003cli\u003eAmplifier: 8 channels, Class A\/B, 8 x 70W (max)\u003c\/li\u003e\n\u003cli\u003eInputs: 4-channel high level plus 2-channel RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 10-channel RCA\u003c\/li\u003e\n\u003cli\u003eBluetooth: 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eMusic player: via USB OTG input\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 (L) x 126 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHB 410 II 8A integrated 10-channel DSP and 8-channel Class A\/B amplifier\u003c\/h2\u003e\n\u003cp\u003eThe HB 410 II 8A is a plug-and-play unit combining a 10-channel DSP with 31-band EQ and an integrated 8-channel Class A\/B amplifier. Inputs include 4-channel high-level and 2-channel RCA, with 10-channel RCA outputs. Bluetooth 5.1 handles wireless music streaming, and the Music Player function is activated via the OTG USB input.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10-Ch. DSP (31-bands EQ)\u003c\/li\u003e\n\u003cli\u003e4-Ch. High Level Inputs\u003c\/li\u003e\n\u003cli\u003e2-Ch. RCA Inputs + 10-Ch. RCA Outputs\u003c\/li\u003e\n\u003cli\u003ePlug \u0026amp; Play ready\u003c\/li\u003e\n\u003cli\u003eBT 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eOTG Input\u003c\/li\u003e\n\u003cli\u003eMusic Player (MP2.3.4, WMA, APE, FLAC, AAC, M4A, WAV, AIF, AIFC)\u003c\/li\u003e\n\u003cli\u003ePC and Mobile DSP tools\u003c\/li\u003e\n\u003cli\u003eMobile Music Player App\u003c\/li\u003e\n\u003cli\u003eAmplifier Power: 8 x 70 Watt (Max)\u003c\/li\u003e\n\u003cli\u003eDim. in mm: 190 (L) x 126 (W) x 45.5 (H)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith the optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eHB DSP II-R remote\u003c\/a\u003e you can control main and subwoofer volume, select presets and input source, and skip tracks with the Music Player — all directly from the dashboard.\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52553765945610,"sku":"92376","price":349.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB410II8A2.jpg?v=1770974714"},{"product_id":"zapco-hb-810-ii-8ad-dsp-amp-10-channel-dsp-8-channel-class-a-b-d-amplifier","title":"Zapco HB 810 II 8AD DSP Amp 10 Channel DSP 8 Channel Class A\/B \u0026 D Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 810 II 8AD is a 10-channel DSP amplifier from the Zapco Harmony HB II series, combining a 31-band EQ processor with an integrated 8-channel amplifier — four channels Class A\/B and four channels Class D — in a single 190 x 166 x 45.5mm unit.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMain and subwoofer volume, presets, source and tracks can be controlled from the dash with the optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R remote\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDSP: 10 channels, 31-band EQ\u003c\/li\u003e\n\u003cli\u003eClass AB power: 4 x 35W at 4 ohms, 4 x 50W at 2 ohms (4 x 100W max)\u003c\/li\u003e\n\u003cli\u003eClass D power: 4 x 100W at 4 ohms, 4 x 150W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eClass D bridged: 2 x 300W at 4 ohms\u003c\/li\u003e\n\u003cli\u003eInputs: 8-channel high level plus 2-channel RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 10-channel RCA\u003c\/li\u003e\n\u003cli\u003eBluetooth: 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 x 166 x 45.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHB 810 II 8AD integrated 10-channel DSP and 8-channel Class AB + D amplifier\u003c\/h2\u003e\n\u003cp\u003eThe HB 810 II 8AD is a 10-Ch. DSP with 31-band EQ and all the control features you need. The integrated 8-Ch. Class-AB + D amp delivers up to 4 x 35W (AB) + 4 x 100W (D) at 4Ω and 4 x 50W (AB) + 4 x 150W (D) at 2Ω.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10-Ch. DSP (31-band EQ)\u003c\/li\u003e\n\u003cli\u003e8-Ch. high-level inputs\u003c\/li\u003e\n\u003cli\u003e2-Ch. RCA inputs + 10-Ch. RCA outputs\u003c\/li\u003e\n\u003cli\u003ePlug \u0026amp; Play ready\u003c\/li\u003e\n\u003cli\u003eBT 5.1 streaming\u003c\/li\u003e\n\u003cli\u003eOTG input\u003c\/li\u003e\n\u003cli\u003eMusic Player (MP2.3.4, WMA, APE, FLAC, AAC, M4A, WAV, AIF, AIFC)\u003c\/li\u003e\n\u003cli\u003ePC and mobile DSP tools\u003c\/li\u003e\n\u003cli\u003eMobile Music Player app\u003c\/li\u003e\n\u003cli\u003eClass AB amplifier power: 4 x 100W max\u003c\/li\u003e\n\u003cli\u003eClass D amplifier power: 4 x 150W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eClass D amplifier power (bridged): 2 x 300W at 4 ohms\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 (L) x 166 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe built-in Bluetooth module and dedicated smartphone app let you control and configure your system wirelessly, as well as browse and play music directly from your phone. The \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eHB DSP II-R remote\u003c\/a\u003e adds dash-mounted control of main and sub volume, preset selection, input source switching, and Music Player track navigation.\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52553784230154,"sku":"92377","price":529.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB810II8AD_0.jpg?v=1770975181"},{"product_id":"zapco-hb-104d-ii-amp-4-channel-class-d-bridgeable-amplifier-4x100w-rms","title":"Zapco HB 104D II Amp 4 Channel Class D Bridgeable Amplifier 4x100w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 104D II is a compact 4-channel Class D bridgeable amplifier from the Zapco Harmony HB II series, delivering 4 x 100W RMS at 4 ohms with RCA and speaker level inputs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is the HB 104D II. The Harmony HB II series is also available as the \u003ca href=\"\/products\/zapco-hb-154d-ii-amp-4-channel-class-d-bridgeable-amplifier-4x150w-rms\"\u003eZapco HB 154D II\u003c\/a\u003e delivering 4 x 150W RMS at 4 ohms.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChannels: 4\u003c\/li\u003e\n\u003cli\u003eClass: D\u003c\/li\u003e\n\u003cli\u003ePower at 4 ohms: 4 x 100W RMS\u003c\/li\u003e\n\u003cli\u003ePower at 2 ohms: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003eBridged power at 4 ohms: 2 x 250W RMS\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.5%\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz–20kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25v–6v (Low)\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level\u003c\/li\u003e\n\u003cli\u003eDimensions: 170 (L) x 115 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e4-Ch. Class D Amplifier\u003c\/h2\u003e\n\u003cp\u003eFull-range 4-channel Class D amplifier with RCA and speaker level inputs, variable input gain control and variable electronic crossover. A compatible DSP remote is available with the \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R\u003c\/a\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 100 watts RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ Rated Power \u0026lt; 0.5%THD\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 150 watts RMS\u003c\/li\u003e\n\u003cli\u003ePower Bridged @ 4Ω: 2 x 250W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio \u0026gt; 90dB\u003c\/li\u003e\n\u003cli\u003eTHD + Noise \u0026lt; 0.1%\u003c\/li\u003e\n\u003cli\u003eFrequency Response 20Hz to 20KHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity .25v to 6v (Low)\u003c\/li\u003e\n\u003cli\u003eDimensions (mm): 170 (L) x 115 (W) x 45.5 (H)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52553987457290,"sku":"92378","price":219.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB104DII1.jpg?v=1770975789"},{"product_id":"zapco-hb-154d-ii-amp-4-channel-class-d-bridgeable-amplifier-4x150w-rms","title":"Zapco HB 154D II Amp 4 Channel Class D Bridgeable Amplifier 4x150w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 154D II is a compact 4-channel Class D bridgeable amplifier delivering 4 x 150W RMS at 4 ohms, from Zapco's Harmony HB II series.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is the HB 154D II (4 x 150W RMS). The Harmony HB II series is also available with a \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R remote control\u003c\/a\u003e for the DSP.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower at 4 ohms: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003ePower at 2 ohms: 4 x 200W RMS\u003c\/li\u003e\n\u003cli\u003eBridged power at 4 ohms: 2 x 350W RMS\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz to 20kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.5%\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25v to 6v (Low)\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level\u003c\/li\u003e\n\u003cli\u003eDimensions: 180 (L) x 115 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHB 154D II 4-channel Class D amplifier\u003c\/h2\u003e\n\u003cp\u003eA compact, full-range 4-channel amplifier with flexible input options and bridgeable outputs, built for clean, efficient power delivery in tight installs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 150 watts RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ Rated Power \u0026lt; 0.5%THD\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 200 watts RMS\u003c\/li\u003e\n\u003cli\u003ePower Bridged @ 4Ω: 2 x 350W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio \u0026gt; 90dB\u003c\/li\u003e\n\u003cli\u003eTHD + Noise \u0026lt; 0.1%\u003c\/li\u003e\n\u003cli\u003eFrequency Response 20Hz to 20KHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity .25v to 6v (Low)\u003c\/li\u003e\n\u003cli\u003eRCA and Speaker Level inputs\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eDimensions (mm): 180 (L) x 115 (W) x 45.5 (H)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554021273866,"sku":"92379","price":249.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB_154D_II_zapco.jpg?v=1770976370"},{"product_id":"zapco-hb-501d-ii-mono-sub-amp-1-channel-class-d-subwoofer-amplifier-1x300w-rms","title":"Zapco HB 501D II Mono Sub Amp 1 Channel Class D Subwoofer Amplifier 1x300w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 501D II is a compact mono Class D subwoofer amplifier from Zapco's Harmony HB II series, delivering 1x300W RMS at 4 ohms or 1x500W RMS at 2 ohms.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you use the optional \u003ca href=\"\/products\/zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp\"\u003eZapco HB DSP II-R remote control\u003c\/a\u003e, you can adjust the DSP settings from the driver's seat.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower at 4 ohms: 1 x 300W RMS\u003c\/li\u003e\n\u003cli\u003ePower at 2 ohms: 1 x 500W RMS\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.5%\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz–180Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V–6V (low level RCA)\u003c\/li\u003e\n\u003cli\u003eDimensions: 175 (L) x 115 (W) x 45.5 (H) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMono Class D Amplifier\u003c\/h2\u003e\n\u003cp\u003eAccepts RCA inputs with a sensitivity range of 0.25V to 6V. Onboard controls include variable input gain, variable electronic crossover, variable bass boost, and a subsonic filter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower @ 4Ω: 1 x 300W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 1 x 500W RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ Rated Power: \u0026lt;0.5%THD\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20Hz to 180Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity: 0.25V to 6V (Low)\u003c\/li\u003e\n\u003cli\u003eDimensions (mm): 175 (L) x 115 (W) x 45.5 (H)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554052305162,"sku":"92380","price":239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB501DII1.jpg?v=1770976863"},{"product_id":"zapco-hb-84d-amp-4-channel-class-d-bridgeable-amplifier-4x75w-rms","title":"Zapco HB 84D Amp 4 Channel Class D Bridgeable Amplifier 4x75w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB 84D is a compact 4-channel full range Class D bridgeable amplifier delivering 4 x 75W RMS at 4 ohms, from Zapco's HB series.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower at 4 ohms: 4 x 75W RMS\u003c\/li\u003e\n\u003cli\u003ePower at 2 ohms: 4 x 120W RMS\u003c\/li\u003e\n\u003cli\u003eBridged power: 2 x 240W RMS at 4 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz to 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise: over 95dB\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 x 115 x 45mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e4-Ch. Class D Amplifier\u003c\/h2\u003e\n\u003cp\u003e4-channel, full range, Class D amplifier with RCA and speaker level inputs, variable input gain control and variable electronic crossover.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 75 watts RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ Rated Power \u0026lt; 0.5%THD\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 120 watts RMS\u003c\/li\u003e\n\u003cli\u003ePower Bridged @ 4Ω: 2 x 240W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio \u0026gt; 95dB\u003c\/li\u003e\n\u003cli\u003eTHD + Noise \u0026lt; 0.1%\u003c\/li\u003e\n\u003cli\u003eFrequency Response 15Hz to 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity .25v to 6v (Low)\u003c\/li\u003e\n\u003cli\u003eDimensions (mm): 160 (L) x 115 (W) x 45 (H)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you need a 4-channel Class D option with more headroom, see the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eZapco ST-104D SQ III\u003c\/a\u003e (4 x 100W RMS).\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554117447946,"sku":"92381","price":239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB_84D_1.jpg?v=1770977670"},{"product_id":"zapco-hb-dsp-ii-r-remote-control-for-harmony-hb-ii-series-amplifier-dsp","title":"Zapco HB DSP II-R Remote Control for Harmony HB II Series Amplifier DSP","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB DSP II-R is an optional wired remote control for Zapco Harmony HB II Series DSP amplifiers, providing dash-mounted control of main volume, subwoofer level, DSP presets, source selection and song selection.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMain volume control\u003c\/li\u003e\n\u003cli\u003eSubwoofer level control\u003c\/li\u003e\n\u003cli\u003eDSP preset selection\u003c\/li\u003e\n\u003cli\u003eSource selection\u003c\/li\u003e\n\u003cli\u003eSong selection (Music Player mode)\u003c\/li\u003e\n\u003cli\u003eCompatible with: HB 68 II, HB 46 II 4A, HB 48 II 4A, HB 410 II 8A, HB 810 II 8AD\u003c\/li\u003e\n\u003cli\u003eDimensions: 90 (L) x 45 (D) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHB DSP II-R remote control\u003c\/h2\u003e\n\u003cp\u003eA wired remote that puts key DSP controls at your fingertips. Compatible with the HB 68 II, \u003ca href=\"\/products\/zapco-hb-46ii-4a-dsp-amp-6-channel-dsp-4-channel-class-a-b-power-amplifier\"\u003eHB 46 II 4A\u003c\/a\u003e, \u003ca href=\"\/products\/zapco-hb-48ii-4a-dsp-amp-8-channel-dsp-4-channel-class-a-b-power-amplifier\"\u003eHB 48 II 4A\u003c\/a\u003e, \u003ca href=\"\/products\/zapco-hb-410-ii-8a-dsp-amp-10-channel-dsp-8-channel-class-a-b-power-amplifier\"\u003eHB 410 II 8A\u003c\/a\u003e and \u003ca href=\"\/products\/zapco-hb-810-ii-8ad-dsp-amp-10-channel-dsp-8-channel-class-a-b-d-amplifier\"\u003eHB 810 II 8AD\u003c\/a\u003e amplifiers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMain volume control\u003c\/li\u003e\n\u003cli\u003eSubwoofer level control\u003c\/li\u003e\n\u003cli\u003eDSP preset selection\u003c\/li\u003e\n\u003cli\u003eSource selection\u003c\/li\u003e\n\u003cli\u003eSong selection (Music Player mode)\u003c\/li\u003e\n\u003cli\u003eDimensions: 90 (L) x 45 (D) mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554237673738,"sku":"92382","price":39.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HB810II8AD2_02e7484e-6982-4a78-ae72-9926a3a98a50.jpg?v=1770979784"},{"product_id":"zapco-hd-bt-ii-d-bluetooth-module-for-hdsp-v-adsp-iv-st-x-dsp-iii","title":"Zapco HD-BT II-D Bluetooth Module for HDSP-V, ADSP-IV \u0026 ST-X DSP III","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HD-BT II-D is an optional Bluetooth module that adds aptX HD music streaming to compatible Zapco HDSP-V, ADSP-IV and ST-X DSP III processors. It is part of the Zapco DSP accessory range.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is the optional HD-BT module for ADSP-IV units such as the \u003ca href=\"\/products\/zapco-adsp-z12-iv-10a-12-channel-dsp-10-channel-amplifier\"\u003eADSP-Z12 IV-10A\u003c\/a\u003e, \u003ca href=\"\/products\/zapco-adsp-z16-iv-12a-integrated-16-channel-dsp-12-channel-class-d-amplifier\"\u003eADSP-Z16 IV-12A\u003c\/a\u003e and \u003ca href=\"\/products\/zapco-dsp-z8-iv-at-8-channel-dsp-cirrus-logic-processor-and-remote-control\"\u003eDSP-Z8 IV AT\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAudio DSP: 120 MHz Qualcomm\u003c\/li\u003e\n\u003cli\u003eProcessor: 32 MHz dual core\u003c\/li\u003e\n\u003cli\u003eAudio interface: 24-bit stereo\u003c\/li\u003e\n\u003cli\u003eCodecs: aptX, aptX HD Adaptive, SBC and AAC\u003c\/li\u003e\n\u003cli\u003eOutputs: digital\u003c\/li\u003e\n\u003cli\u003eCompatibility: HDSP-V, ADSP-IV, ST-X DSP III\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHD-BT II-D Bluetooth module for HDSP-V, ADSP-IV and ST-X DSP III\u003c\/h2\u003e\n\u003cp\u003eThe HD-BT II-D adds high-quality Bluetooth streaming and full app control to compatible Zapco DSP units. Stream music at aptX HD quality and tune your system from your phone.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e120 MHz Qualcomm Audio DSP\u003c\/li\u003e\n\u003cli\u003e32 MHz dual core processor\u003c\/li\u003e\n\u003cli\u003eHigh-performance 24-bit stereo audio interface\u003c\/li\u003e\n\u003cli\u003eaptX and aptX HD Adaptive codec support\u003c\/li\u003e\n\u003cli\u003eSBC and AAC audio codec support\u003c\/li\u003e\n\u003cli\u003eDigital outputs\u003c\/li\u003e\n\u003cli\u003eCompatibility: HDSP-V, ADSP-IV, ST-X DSP III\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnce fitted, you can stream music directly to your DSP via Bluetooth at aptX HD quality. With the ST-X DSP III series, the companion app gives you complete control over setup and tuning from your mobile phone.\u003c\/p\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554726899978,"sku":"92383","price":89.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/HD-BTII-D.jpg?v=1770987506"},{"product_id":"zapco-hb-cb20f-20-farad-capacitor-bank-with-lcd-voltage-display","title":"Zapco HB CB20F 20 Farad Capacitor Bank with LCD Voltage Display","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco HB CB20F is a 20 Farad capacitor bank with an LCD voltage display, part of the Zapco HB range. It acts as a power reservoir, keeping your amplifier supplied during heavy bass hits and stabilising battery voltage.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCapacity: 20 Farad\u003c\/li\u003e\n\u003cli\u003eDisplay: LCD voltage display\u003c\/li\u003e\n\u003cli\u003eWorking voltage: 12V DC\u003c\/li\u003e\n\u003cli\u003ePeak voltage: 16V DC\u003c\/li\u003e\n\u003cli\u003eImpedance (ESR): 0.0015 ohm\u003c\/li\u003e\n\u003cli\u003eDimensions: 160mm (L) x 115mm (W) x 45mm (H)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHB CB20F 20 Farad capacitor bank\u003c\/h2\u003e\n\u003cp\u003eA high-capacity power reservoir that keeps your amplifier supplied during heavy bass hits, reducing strain on your battery and electrical system. Works well paired with amplifiers such as the \u003ca href=\"\/products\/zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms\"\u003eZapco ST-5B 5-channel amplifier\u003c\/a\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 Farad capacity with LCD voltage display\u003c\/li\u003e\n\u003cli\u003eVery fast transient response\u003c\/li\u003e\n\u003cli\u003eImproves sound quality\u003c\/li\u003e\n\u003cli\u003eImproves bass response\u003c\/li\u003e\n\u003cli\u003eStabilises battery voltage\u003c\/li\u003e\n\u003cli\u003eWorking voltage: 12V DC\u003c\/li\u003e\n\u003cli\u003ePeak voltage: 16V DC\u003c\/li\u003e\n\u003cli\u003eImpedance (E.S.R.): 0.0015 Ohm\u003c\/li\u003e\n\u003cli\u003eDimensions: 160mm (L) x 115mm (W) x 45mm (H)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554843357450,"sku":"92384","price":239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/zapcoHBCB20F.jpg?v=1770988647"},{"product_id":"zapco-st-a1-amp-android-unit-class-ab-amplifier-plug-play-4x35w-rms","title":"Zapco ST-A1 Amp Android Unit Class AB Amplifier Plug \u0026 Play 4x35w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-A1 is a compact plug-and-play Class AB amplifier designed for Android head units, rated at 4 x 35W RMS at 4 ohms (4 x 70W max). It is part of Zapco's ST-A series.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-A1\u003c\/li\u003e\n\u003cli\u003eChannels: 4, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 35W RMS (4 x 70W max)\u003c\/li\u003e\n\u003cli\u003eInputs: 4 balanced high-level\u003c\/li\u003e\n\u003cli\u003eOutputs: 2 RCA for amplified subwoofer\u003c\/li\u003e\n\u003cli\u003eEQ: 3-band\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;85dB\u003c\/li\u003e\n\u003cli\u003eChannel separation: \u0026gt;70dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz – 20kHz\u003c\/li\u003e\n\u003cli\u003eDimensions: 103(W) x 45(H) x 151(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe Zapco ST-A1 plugs straight into Android head units, adding clean amplified power without complex installation. If you need more channels or higher power, Zapco also offer the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eST-4B 4-channel Class AB amplifier at 4 x 65W RMS\u003c\/a\u003e and the \u003ca href=\"\/products\/zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms\"\u003eST-5B 5-channel Class AB amplifier\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eST-A1 Android Unit Class AB Amplifier\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3-band equalisation\u003c\/li\u003e\n\u003cli\u003e4 balanced high-level inputs\u003c\/li\u003e\n\u003cli\u003eHigh-quality op-amp\u003c\/li\u003e\n\u003cli\u003e2 RCA outputs for amplified subwoofer\u003c\/li\u003e\n\u003cli\u003eOver-current and over-voltage protection\u003c\/li\u003e\n\u003cli\u003eHigh-temperature protection\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 35 watts\u003c\/li\u003e\n\u003cli\u003ePower max: 4 x 70 watts\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio \u0026gt;85dB\u003c\/li\u003e\n\u003cli\u003eChannel separation \u0026gt;70dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz to 20kHz\u003c\/li\u003e\n\u003cli\u003eDimensions: 103(W) x 45(H) x 151(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52554929897738,"sku":"92385","price":109.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/zapcoST-A1.jpg?v=1770989315"},{"product_id":"zapco-st-1b-sub-amp-mono-1-channel-class-ab-subwoofer-amplifier-200w-rms","title":"Zapco ST-1B Sub Amp Mono 1 Channel Class AB Subwoofer Amplifier 200w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-1B is a mono Class AB subwoofer amplifier rated at 200W RMS at 4 ohms and 300W RMS at 2 ohms. It features a MOSFET power supply with onboard low-pass crossover, bass boost, phase and subsonic controls. It is part of Zapco's ST-B series.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is compatible with the optional \u003ca href=\"\/products\/zapco-st-br-remote-level-control-for-studio-series-amplifiers-st-5b-st-1b\"\u003eZapco ST-BR remote level control\u003c\/a\u003e. If you need more channels, the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eZapco ST-4B\u003c\/a\u003e and \u003ca href=\"\/products\/zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms\"\u003eZapco ST-5B\u003c\/a\u003e are full-range Class AB options from the same family.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-1B\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 200W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 300W RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt;0.2%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V–5V\u003c\/li\u003e\n\u003cli\u003eControls: gain, LP crossover, bass boost, phase 0–180°, subsonic filter\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 182(W) x 52(H) x 280(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 182(W) x 52(H) x 310(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-1B Mono Class AB Amplifier\u003c\/h2\u003e\n\u003cp\u003eA compact mono amplifier built specifically for subwoofers, with a MOSFET power supply and flexible tuning controls.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRCA input and output\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable LP electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost\u003c\/li\u003e\n\u003cli\u003ePhase 0–180°\u003c\/li\u003e\n\u003cli\u003eSubsonic filter\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω: 200W\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 300W\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt;0.2%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V–5V\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 182(W) x 52(H) x 280(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 182(W) x 52(H) x 310(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52555098161418,"sku":"92386","price":119.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-1B3.jpg?v=1770992007"},{"product_id":"zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms","title":"Zapco ST-4B Amp 4 Channel Class AB Full Range Bridgeable Amplifier 4x 65w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-4B is a 4-channel Class AB full range bridgeable amplifier rated at 4 x 65W RMS at 4 ohms and 4 x 90W at 2 ohms. It accepts both RCA and OEM speaker level inputs, making it suitable for use with factory or aftermarket head units. It is part of Zapco's ST-B amplifier range.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is the ST-4B. The ST-B range is also available as the 5-channel \u003ca href=\"\/products\/zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms\"\u003eST-5B\u003c\/a\u003e, which adds a dedicated subwoofer channel.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-4B\u003c\/li\u003e\n\u003cli\u003eChannels: 4, full range, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 65W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 90W\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 180W\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and OEM speaker level\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V to 5V\u003c\/li\u003e\n\u003cli\u003eCrossover: variable full \/ LP \/ HP\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt; 0.2%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt; 90dB\u003c\/li\u003e\n\u003cli\u003eChannel separation: \u0026gt; 45dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 182(W) x 52(H) x 280(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 182(W) x 52(H) x 310(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-4B 4-Channel Class AB Amplifier\u003c\/h2\u003e\n\u003cp\u003eStable into a 4 ohm bridged or 2 ohm stereo load. Suits speaker upgrades on both factory and aftermarket systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMOSFET power supply\u003c\/li\u003e\n\u003cli\u003eRCA and OEM speaker level input\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable full \/ LP \/ HP electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 65 watts\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 90 watts\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω bridged: 2 x 180 watts\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power \u0026lt; 0.2%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio \u0026gt; 90dB\u003c\/li\u003e\n\u003cli\u003eChannel separation \u0026gt; 45dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz to 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V to 5V\u003c\/li\u003e\n\u003cli\u003eNet dimensions (mm): 182(W) x 52(H) x 280(L)\u003c\/li\u003e\n\u003cli\u003eOverall dimensions (mm): 182(W) x 52(H) x 310(L)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52555343855882,"sku":"92387","price":119.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-4B1.jpg?v=1770996317"},{"product_id":"zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms","title":"Zapco ST-5B Amp 5 Channel Class AB Full Range Amplifier 4x70w + 1x250 RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-5B is a 5-channel Class AB full-range amplifier rated at 4 x 70W + 1 x 250W RMS, part of Zapco's ST-B series. It powers four speakers and a subwoofer from a single unit, with both RCA and OEM speaker-level inputs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is compatible with the optional \u003ca href=\"\/products\/zapco-st-br-remote-level-control-for-studio-series-amplifiers-st-5b-st-1b\"\u003eZapco ST-BR remote level control\u003c\/a\u003e. The \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eST-4B\u003c\/a\u003e is the same series without the subwoofer channel.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-5B\u003c\/li\u003e\n\u003cli\u003eChannels: 5, full range, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 70W + 1 x 250W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 100W + 1 x 400W\u003c\/li\u003e\n\u003cli\u003eBridged: 2 x 180W + 1 x 400W (2 ohms)\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and OEM speaker level\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 182(W) x 52(H) x 351(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 182(W) x 52(H) x 381(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-5B 5-channel Class AB amplifier\u003c\/h2\u003e\n\u003cp\u003eStable into 4 ohms bridged or 2 ohms stereo load.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMOSFET power supply\u003c\/li\u003e\n\u003cli\u003eRCA and OEM speaker-level input\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable full \/ LP \/ HP electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 70 + 1 x 250 watts\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 100 + 1 x 400 watts\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω bridged: 2 x 180 + 1 x 400 (2Ω)\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power \u0026lt; 0.2%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio \u0026gt; 90dB\u003c\/li\u003e\n\u003cli\u003eChannel separation \u0026gt; 45dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.25V – 5V\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 182(W) x 52(H) x 351(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 182(W) x 52(H) x 381(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52555365384458,"sku":"92388","price":189.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-5B1.jpg?v=1770996705"},{"product_id":"zapco-st-br-remote-level-control-for-studio-series-amplifiers-st-5b-st-1b","title":"Zapco ST-BR Remote Level Control for Studio Series Amplifiers ST-5B ST-1B","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-BR is a remote level control for Zapco Studio Series amplifiers. It features a solid housing for under-dash mounting and is compatible with the ST-6X SQ III, all ST-XM III mono amplifiers, the ST-5B and the ST-1B.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eCompatible amplifiers sold by CEN include the \u003ca href=\"\/products\/zapco-st-5b-amp-5-channel-class-ab-full-range-amplifier-4x70w-1x250-rms\"\u003eST-5B\u003c\/a\u003e, the ST-1B, the ST-1000XM III, the ST-1500XM III and the ST-2000XM III. Note that the ST-XM III mono amplifiers already include an ST-BR in the box.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-BR\u003c\/li\u003e\n\u003cli\u003eType: Remote level control\u003c\/li\u003e\n\u003cli\u003eMounting: Under-dash, solid housing\u003c\/li\u003e\n\u003cli\u003eCompatible with: ST-6X SQ III, all ST-XM III mono amps, ST-5B, ST-1B\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-BR\u003c\/h2\u003e\n\u003cp\u003eThe ST-BR is an accessory remote level control for the Zapco Studio Series. Mount it under the dash using the solid housing for a clean, accessible installation.\u003c\/p\u003e\n\u003cp\u003eThe ST-BR is included with ST-XM III mono amplifiers — you only need to purchase it separately for compatible amplifiers such as the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eST-4B\u003c\/a\u003e, ST-5B and ST-1B.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemote level control\u003c\/li\u003e\n\u003cli\u003eUnder-dash installation\u003c\/li\u003e\n\u003cli\u003eCompatible amplifiers: ST-6X SQ III, ST-XM III mono amps (all), ST-5B, ST-1B\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52555419320586,"sku":"92389","price":19.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-BR1.jpg?v=1770997510"},{"product_id":"zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms","title":"Zapco ST-104D SQ III Amp 4-Channel Class D Compact Amplifier 4x100w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-104D SQ III is a compact 4-channel Class D full range amplifier rated at 4 x 100W RMS at 4 ohms and 4 x 150W RMS at 2 ohms. With RCA and speaker level inputs, it suits upgrades to factory or aftermarket head units where space is limited. It is part of Zapco's ST-III range.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-104D SQ III\u003c\/li\u003e\n\u003cli\u003eChannels: 4, full range, Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 100W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 300W RMS\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.35v to 9v (Low)\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt;0.5%\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 124(W) x 50(H) x 213(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 124(W) x 50(H) x 254(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-104D SQ III — 4-channel Class D compact amplifier\u003c\/h2\u003e\n\u003cp\u003eThe ST-III series introduced Zapco's Studio brushed aluminium finned chassis. If you need a 4-channel Class AB option, the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eZapco ST-4B\u003c\/a\u003e is also available.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4-channel, full range, Class D\u003c\/li\u003e\n\u003cli\u003eRCA and speaker level inputs\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003cli\u003ePower @ 4Ω: 4 x 100W RMS\u003c\/li\u003e\n\u003cli\u003eTHD @ rated power: \u0026lt;0.5%\u003c\/li\u003e\n\u003cli\u003ePower @ 2Ω: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003ePower bridged @ 4Ω: 2 x 300W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;90dB\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz to 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.35v to 9v (Low)\u003c\/li\u003e\n\u003cli\u003eNet dimensions: 124(W) x 50(H) x 213(L) mm\u003c\/li\u003e\n\u003cli\u003eOverall dimensions: 124(W) x 50(H) x 254(L) mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52555433771274,"sku":"92390","price":259.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-104DSQIII.jpg?v=1770998416"},{"product_id":"zapco-st-1000xm-iii-amp-mono-1-channel-class-d-subwoofer-amplifier-with-remote","title":"Zapco ST-1000XM III Amp Mono 1 Channel Class D Subwoofer Amplifier with Remote","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-1000XM III is a mono, single-channel Class D subwoofer amplifier from Zapco's ST-X III series, delivering 1000W at 1 ohm, 700W at 2 ohms and 500W at 4 ohms. It includes a dash-mount remote gain control as standard.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe included remote is the Zapco ST-BR remote level control, supplied with Zapco's ST-X mono amplifiers. Higher-powered versions in the same series are the ST-1500XM III and ST-2000XM III.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-1000XM III\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 1 ohm: 1 x 1000W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 1 x 700W\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 1 x 500W\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 200Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;100dB\u003c\/li\u003e\n\u003cli\u003eEfficiency: \u0026gt;85%\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 x 58 x 325 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-1000XM III\u003c\/h2\u003e\n\u003ch3\u003eMono Class D Amplifier\u003c\/h3\u003e\n\u003cp\u003eA single-channel Class D bass amplifier built on a new aluminium chassis, giving precise control over subwoofer output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable subsonic filter\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003cli\u003eVariable centre frequency for bass boost\u003c\/li\u003e\n\u003cli\u003eVariable phase control\u003c\/li\u003e\n\u003cli\u003eStrappable to run a pair of amps on a single voice coil\u003c\/li\u003e\n\u003cli\u003eDash-mount remote gain control included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565394391306,"sku":"92391","price":349.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-1000XMIII.jpg?v=1771234482"},{"product_id":"zapco-st-1500xm-iii-amp-mono-1-channel-class-d-subwoofer-amplifier-with-remote","title":"Zapco ST-1500XM III Amp Mono 1 Channel Class D Subwoofer Amplifier with Remote","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-1500XM III is a mono, single-channel Class D subwoofer amplifier producing 1600W at 1 ohm, 1150W at 2 ohms and 800W at 4 ohms. It is part of Zapco's ST-X III mono amplifier range and includes a dash-mount remote gain control.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis listing is the ST-1500XM III. The ST-X mono range is also available as the \u003ca href=\"\/products\/zapco-st-1000xm-iii-amp-mono-1-channel-class-d-subwoofer-amplifier-with-remote\"\u003eST-1000XM III\u003c\/a\u003e and the \u003ca href=\"\/products\/zapco-st-2000xm-iii-amp-mono-1-channel-class-d-subwoofer-amplifier-with-remote\"\u003eST-2000XM III\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-1500XM III\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 1 ohm: 1 x 1600W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 1 x 1150W\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 1 x 800W\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 200Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;85dB\u003c\/li\u003e\n\u003cli\u003eEfficiency: \u0026gt;85%\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 x 58 x 400 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-1500XM III\u003c\/h2\u003e\n\n\u003cp\u003eA single-channel Class D subwoofer amplifier built on an aluminium chassis. The included dash-mount remote is the Zapco ST-BR remote level control, supplied as standard with Zapco's ST-X mono amplifiers.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable subsonic filter\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003cli\u003eVariable centre frequency for bass boost\u003c\/li\u003e\n\u003cli\u003eVariable phase control\u003c\/li\u003e\n\u003cli\u003eStrappable to use a pair of amps on a single voice coil\u003c\/li\u003e\n\u003cli\u003eDash-mount remote gain control included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565405794570,"sku":"92392","price":479.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ZapcoST-1500XMIII.jpg?v=1771234860"},{"product_id":"zapco-st-6x-dsp-iii-amp-6-channel-class-ab-amplifier-with-8-channel-dsp-6x100w-1","title":"Zapco ST-6X DSP III Amp 6 Channel Class AB Amplifier with 8 Channel DSP 6x100w","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-6X DSP III is a 6-channel Class A\/B amplifier with an on-board 8-channel DSP, rated at 6 x 100W at 4 ohms. It is part of Zapco's ST III amplifier range and is designed for sound quality builds requiring amplification and full digital signal processing in a single unit.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-6X DSP III\u003c\/li\u003e\n\u003cli\u003eChannels: 6, full range, Class A\/B\u003c\/li\u003e\n\u003cli\u003eDSP: on-board 8-channel\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 6 x 100W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 6 x 130W\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 3 x 250W\u003c\/li\u003e\n\u003cli\u003eInputs: analogue and optical digital\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz - 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 x 57 x 475 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe ST-6X DSP III combines a six-channel Class A\/B amplifier with an eight-channel DSP, giving precise control over your car audio system from a single unit. If you need fewer channels, Zapco's ST III range also includes the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eST-104D SQ III 4-channel Class D compact amplifier\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eST-6X DSP III\u003c\/h2\u003e\n\u003ch3\u003e6-Ch. Class AB Amplifier with DSP\u003c\/h3\u003e\n\u003cp\u003e6-channel, full range, Class A\/B, on-board, full-function 8-channel digital signal processing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-pass and low-pass filters, phase control, signal delay, and 15 channels of parametric equalisation on each channel\u003c\/li\u003e\n\u003cli\u003eOptical digital input\u003c\/li\u003e\n\u003cli\u003eBT Streaming: Bluetooth port for external APTX HD module (optional)\u003c\/li\u003e\n\u003cli\u003eAnalogue input gain controls\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565413789962,"sku":"92393","price":699.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-6XDSPIII.jpg?v=1771235565"},{"product_id":"zapco-st-2000xm-iii-amp-mono-1-channel-class-d-subwoofer-amplifier-with-remote","title":"Zapco ST-2000XM III Amp Mono 1 Channel Class D Subwoofer Amplifier with Remote","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-2000XM III is a mono, single-channel Class D subwoofer amplifier delivering 2000W at 1 ohm, 1450W at 2 ohms and 1000W at 4 ohms. It is part of Zapco's ST-X III mono amplifier range and comes with a dash-mount remote gain control.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe included remote is the Zapco ST-BR remote level control, supplied as standard with Zapco's ST-X mono amplifiers. Lower-powered alternatives in the same family are the ST-1000XM III and ST-1500XM III.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-2000XM III\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 1 ohm: 1 x 2000W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 1 x 1450W\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 1 x 1000W\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 200Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;85dB\u003c\/li\u003e\n\u003cli\u003eEfficiency: \u0026gt;85%\u003c\/li\u003e\n\u003cli\u003eDimensions: 160 x 58 x 475 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-2000XM III\u003c\/h2\u003e\n\u003ch3\u003eMono Class D Amplifier\u003c\/h3\u003e\n\u003cp\u003eA single-channel Class D bass amplifier built on a new aluminium chassis, giving precise control over subwoofer output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable subsonic filter\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003cli\u003eVariable centre frequency for bass boost\u003c\/li\u003e\n\u003cli\u003eVariable phase control\u003c\/li\u003e\n\u003cli\u003eStrappable to run a pair of amplifiers on a single voice coil\u003c\/li\u003e\n\u003cli\u003eDash-mount remote gain control included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565435678986,"sku":"92394","price":599.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ZapcoST-2000XMIII.jpg?v=1771235050"},{"product_id":"zapco-st-64d-sq-mini-amp-4-channel-class-d-bridgeable-mini-car-amplifier","title":"Zapco ST-64D SQ MINI Amp 4 Channel Class D Bridgeable Mini Car Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-64D SQ MINI is a micro-chassis 4-channel Class D bridgeable car amplifier, rated at 4 x 50W RMS at 4 ohms and 4 x 75W RMS at 2 ohms, from Zapco's SQ MINI range.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor more power in the same compact format, see the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eZapco ST-104D SQ III 4-channel Class D amplifier\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-64D SQ MINI\u003c\/li\u003e\n\u003cli\u003eChannels: 4, full range, Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 50W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 75W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 150W RMS\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level, auto-on with speaker level\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz - 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 86 x 42 x 151 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-64D SQ MINI\u003c\/h2\u003e\n\u003ch3\u003e4-Ch. Class D Mini Amplifier\u003c\/h3\u003e\n\u003cp\u003eA compact four-channel Class D amplifier that fits where full-size amps won't, without sacrificing sound quality. Accepts both RCA and speaker-level inputs, making it straightforward to install in factory and aftermarket systems alike.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptional HD Bluetooth\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eAuto-on with speaker level inputs\u003c\/li\u003e\n\u003cli\u003eMicro chassis\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565453242634,"sku":"92395","price":259.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-64DSQMINI1.jpg?v=1771234190"},{"product_id":"zapco-st-104d-sq-mini-amp-4-channel-class-d-bridgeable-mini-car-amplifier","title":"Zapco ST-104D SQ MINI Amp 4 Channel Class D Bridgeable Mini Car Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-104D SQ MINI is a micro-chassis 4-channel Class D bridgeable car amplifier rated at 4 x 95W RMS at 4 ohms and 4 x 120W RMS at 2 ohms. It is part of Zapco's SQ MINI range, designed for tight installs where a full-size amplifier will not fit.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Zapco ST-104D SQ MINI is also available as the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eST-104D SQ III\u003c\/a\u003e, a compact (non-MINI) 4-channel Class D amplifier rated at 4 x 100W RMS.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-104D SQ MINI\u003c\/li\u003e\n\u003cli\u003eChannels: 4, full range, Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 95W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 120W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 240W RMS\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level; auto-on with speaker level\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 95 x 37 x 236 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-104D SQ MINI\u003c\/h2\u003e\n\u003ch3\u003e4-Ch. Class D Mini Amplifier\u003c\/h3\u003e\n\u003cp\u003eA compact four-channel Class D amplifier built for installs where space is limited, without compromising sound quality. Accepts both RCA and speaker level inputs and is bridgeable for flexible installation options.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptional HD Bluetooth\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eAuto-on with speaker level inputs\u003c\/li\u003e\n\u003cli\u003eMicro chassis\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565461434634,"sku":"92396","price":349.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-104DSQMINI1.jpg?v=1771234152"},{"product_id":"zapco-st-501d-sq-mini-sub-amp-1-channel-class-d-mono-subwoofer-amplifier","title":"Zapco ST-501D SQ MINI Sub Amp 1 Channel Class D Mono Subwoofer Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-501D SQ MINI is a mono Class D subwoofer amplifier in a micro-chassis design, rated at 180W RMS at 4 ohms, 320W RMS at 2 ohms and 530W RMS at 1 ohm. It is part of Zapco's SQ MINI range of compact amplifiers.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatching 4-channel amps in the same SQ MINI series include the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eST-104D SQ\u003c\/a\u003e range from Zapco.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-501D SQ MINI\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 180W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 320W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 1 ohm: 530W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;100dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15Hz – 250Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 86 x 42 x 206 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-501D SQ MINI\u003c\/h2\u003e\n\u003cp\u003eA compact mono Class D amplifier built for subwoofer duty. Serious output from a very small footprint, and two units can be strapped together for even higher output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRCA level input\u003c\/li\u003e\n\u003cli\u003eRemote control included\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eBass boost\u003c\/li\u003e\n\u003cli\u003eSubsonic filter\u003c\/li\u003e\n\u003cli\u003eMicro chassis\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565493383434,"sku":"92397","price":259.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ST-501DSQMINI1.jpg?v=1771234109"},{"product_id":"zapco-z-150-2-ii-amp-2-channel-class-ab-bridgeable-amplifier-550w-rms","title":"Zapco Z-150.2 II Amp 2 Channel Class AB Bridgeable Amplifier 550w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco Z-150.2 II is a 2-channel Class AB bridgeable amplifier rated at 2 x 165W RMS at 4 ohms or 1 x 550W RMS bridged at 4 ohms, from Zapco's Z-Series II range.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is the 2-channel version. The Zapco Z-150 II is also available as the \u003ca href=\"\/products\/zapco-z-150-4-ii-amp-4-channel-class-ab-bridgeable-amplifier-2x-550w-rms\"\u003eZapco Z-150.4 II 4-channel amplifier\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Z-150.2 II\u003c\/li\u003e\n\u003cli\u003eChannels: 2, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 2 x 165W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 2 x 275W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 1 x 550W RMS\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.05%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;100dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 x 62 x 328 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eZ-150.2 II — 2-channel Class AB Sound Quality Amplifier\u003c\/h2\u003e\n\u003cp\u003eA competition-grade 2-channel amplifier delivering 550W RMS bridged, suited to front stage or subwoofer duties in serious car audio builds.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2-channel Class AB sound quality amplifier\u003c\/li\u003e\n\u003cli\u003eStable into 4 ohms bridged or 2 ohms stereo\u003c\/li\u003e\n\u003cli\u003ePWM MOSFET power supply\u003c\/li\u003e\n\u003cli\u003eHigh-end op-amps and capacitors\u003c\/li\u003e\n\u003cli\u003eVariable FULL \/ LP \/ HP electronic crossover\u003c\/li\u003e\n\u003cli\u003e0–12dB variable bass boost\u003c\/li\u003e\n\u003cli\u003e4-way protection circuitry\u003c\/li\u003e\n\u003cli\u003eWired remote control (optional)\u003c\/li\u003e\n\u003cli\u003ePanel mount RCA connectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565622194442,"sku":"92398","price":519.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/Z-150.2II2.jpg?v=1771236765"},{"product_id":"zapco-z-150-4-ii-amp-4-channel-class-ab-bridgeable-amplifier-2x-550w-rms","title":"Zapco Z-150.4 II Amp 4 Channel Class AB Bridgeable Amplifier 2x 550w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco Z-150.4 II is a 4-channel Class AB bridgeable amplifier rated at 4 x 165W RMS at 4 ohms and 2 x 550W RMS bridged at 4 ohms, from Zapco's Z-Series range.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is the 4-channel Z-150.4 II. The Z-150 II is also available as the \u003ca href=\"\/products\/zapco-z-150-2-ii-amp-2-channel-class-ab-bridgeable-amplifier-550w-rms\"\u003e2-channel Z-150.2 II\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Z-150.4 II\u003c\/li\u003e\n\u003cli\u003eChannels: 4, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 165W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 275W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 550W RMS\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.05%\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;100dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 x 62 x 479 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eZ-150.4 II — 4-Channel Class AB Sound Quality Amplifier\u003c\/h2\u003e\n\u003cp\u003eA competition-grade 4-channel amplifier built for sound quality. Stable into a 4 ohm bridged or 2 ohm stereo load, it suits front and rear stage builds requiring clean, high-output power.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4-channel Class AB sound quality amplifier\u003c\/li\u003e\n\u003cli\u003eStable into 4 ohms bridged or 2 ohms stereo\u003c\/li\u003e\n\u003cli\u003ePWM MOSFET power supply\u003c\/li\u003e\n\u003cli\u003eHigh-end op-amps and capacitors\u003c\/li\u003e\n\u003cli\u003eVariable Full \/ LP \/ HP electronic crossover\u003c\/li\u003e\n\u003cli\u003e0–12dB variable bass boost\u003c\/li\u003e\n\u003cli\u003e4-way protection circuitry\u003c\/li\u003e\n\u003cli\u003eOptional wired remote control\u003c\/li\u003e\n\u003cli\u003ePanel mount RCA connectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565680193802,"sku":"92399","price":829.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/Z-150.4II1.jpg?v=1771237042"},{"product_id":"zapco-z-150-2-ap-amp-2-channel-class-ab-bridgeable-amplifier-1000w-rms","title":"Zapco Z-150.2 AP Amp 2 Channel Class AB Bridgeable Amplifier 1000w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco Z-150.2 AP is a 2-channel Class AB competition audiophile amplifier rated at 2 x 150W at 4 ohms, bridgeable to 1 x 1000W at 2 ohms on music signal, with a signal-to-noise ratio of over 110dB. It is part of Zapco's AP (Audiophile) amplifier range.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis listing is the 2-channel version. The Zapco Z-150 AP is also available as the 4-channel \u003ca href=\"\/products\/zapco-z-150-4-ap-amp-4-channel-class-ab-bridgeable-amplifier-2x800w-rms\"\u003eZapco Z-150.4 AP\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Z-150.2 AP\u003c\/li\u003e\n\u003cli\u003eChannels: 2, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 2 x 150W\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 2 x 275W\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 1 x 550W\u003c\/li\u003e\n\u003cli\u003eBridged @ 2 ohms: 1 x 1000W (music signal, with proper ventilation)\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio: \u0026gt;110dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 x 62 x 328 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eZ-150.2 AP\u003c\/h2\u003e\n\u003ch3\u003e2-Ch. Class AB Audiophile Amplifier\u003c\/h3\u003e\n\u003cp\u003eA two-channel Class AB amplifier built specifically for sound quality competition use, with competition-grade components throughout.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2-channel, Class AB competition audiophile amplifier\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio of over 110dB\u003c\/li\u003e\n\u003cli\u003eCoupled output drivers\u003c\/li\u003e\n\u003cli\u003eHighest HFE (Gain) Sanken selected output devices\u003c\/li\u003e\n\u003cli\u003eDifferential balanced input stage\u003c\/li\u003e\n\u003cli\u003e0.1% resistors for lowest possible noise floor\u003c\/li\u003e\n\u003cli\u003eTI LME49720 (BJT) op-amps on the inputs\u003c\/li\u003e\n\u003cli\u003eTI LME49720 (BJT) op-amps in the signal path\u003c\/li\u003e\n\u003cli\u003eWIMA MKS2 series caps in the signal path\u003c\/li\u003e\n\u003cli\u003eExtremely low ESR caps throughout\u003c\/li\u003e\n\u003cli\u003eProprietary patented RCA connectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565906850058,"sku":"92400","price":799.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/z1502ap.jpg?v=1771242062"},{"product_id":"zapco-z-150-4-ap-amp-4-channel-class-ab-bridgeable-amplifier-2x800w-rms","title":"Zapco Z-150.4 AP Amp 4 Channel Class AB Bridgeable Amplifier 2x800w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco Z-150.4 AP is a 4-channel Class AB bridgeable amplifier rated at 4 x 150W RMS at 4 ohms, or up to 2 x 800W bridged at 2 ohms (music signal). It is part of Zapco's competition audiophile AP series, designed for serious sound quality builds with a signal-to-noise ratio of over 110dB.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis listing is the 4-channel version. The Z-150 AP is also available as the 2-channel \u003ca href=\"\/products\/zapco-z-150-2-ap-amp-2-channel-class-ab-bridgeable-amplifier-1000w-rms\"\u003eZapco Z-150.2 AP\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Z-150.4 AP\u003c\/li\u003e\n\u003cli\u003eChannels: 4, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 275W\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 550W\u003c\/li\u003e\n\u003cli\u003eBridged @ 2 ohms: 2 x 800W (music signal, with proper ventilation)\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio: \u0026gt;110dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 30kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 190 x 62 x 468 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eZ-150.4 AP\u003c\/h2\u003e\n\u003ch3\u003e4-Ch. Class AB Audiophile Amplifier\u003c\/h3\u003e\n\u003cp\u003eA competition-grade 4-channel amplifier built for serious sound quality, using precision components throughout the signal path.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4-channel, Class AB, competition audiophile amplifier\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio of over 110dB\u003c\/li\u003e\n\u003cli\u003eCoupled output drivers\u003c\/li\u003e\n\u003cli\u003eHighest HFE (Gain) Sanken selected output devices\u003c\/li\u003e\n\u003cli\u003eDifferential balanced input stage\u003c\/li\u003e\n\u003cli\u003e0.1% resistors for lowest possible noise floor\u003c\/li\u003e\n\u003cli\u003eTI LME49720 (BJT) op-amps on the inputs and in the signal path\u003c\/li\u003e\n\u003cli\u003eWIMA MKS2 series caps in the signal path\u003c\/li\u003e\n\u003cli\u003eExtremely low ESR caps throughout\u003c\/li\u003e\n\u003cli\u003eProprietary patented RCA connectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":52565997355274,"sku":"92401","price":1299.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/zapco_6b9ac015-aae0-4d00-b13d-72e32cc3246b.jpg?v=1771242419"},{"product_id":"zapco-st-750d-amp-mono-1-channel-class-d-compact-subwoofer-amplifier-400w-rms","title":"Zapco ST-750D Amp Mono 1-Channel Class D Compact Subwoofer Amplifier 400w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-750D is a mono Class D compact subwoofer amplifier rated at 400W RMS at 4 ohms and 750W RMS at 2 ohms. It accepts both RCA and speaker level inputs and includes a subsonic filter, making it a space-efficient solution for bass upgrades. It is part of Zapco's ST-D Compact Series.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-750D\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 1 x 400W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 1 x 750W RMS\u003c\/li\u003e\n\u003cli\u003eInputs: RCA and speaker level\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;98dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 250Hz ±1dB\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 6.5V – 17V\u003c\/li\u003e\n\u003cli\u003eDimensions: 124 x 50 x 254 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-750D Mono Class D Compact Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe ST-D Compact Series reduces the chassis dimensions of Zapco's earlier ST-III amps — down to 12.4 cm (W) and 5 cm (H) compared with the ST-III's 16 cm (W) and 5.8 cm (H). The result is a smaller footprint without sacrificing control or output.\u003c\/p\u003e\n\u003cp\u003eDespite the compact size, the ST-750D offers full control flexibility: RCA or speaker level inputs, variable input gain, variable electronic crossover, and variable bass boost. If you need multi-channel coverage alongside your subwoofer, the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eZapco ST-4B 4-channel amplifier\u003c\/a\u003e is a compatible partner from the same ST range.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMono, bass, Class D\u003c\/li\u003e\n\u003cli\u003eRCA and speaker level inputs\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003cli\u003eSubsonic filter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":53179062812938,"sku":"92989","price":279.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/st-750d.jpg?v=1781008378"},{"product_id":"zapco-ref-500-1-amp-mono-1-channel-class-ab-subwoofer-amplifier-320w-rms","title":"Zapco REF 500.1 Amp Mono 1 Channel Class AB Subwoofer Amplifier 320w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco REF 500.1 is a mono, single-channel Class AB subwoofer amplifier rated at 320W RMS at 4 ohms and 550W RMS at 2 ohms. It is part of Zapco's Reference Series, built for sound-quality-focused subwoofer applications.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: REF 500.1\u003c\/li\u003e\n\u003cli\u003eChannels: 1 (mono), Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 1 x 320W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 1 x 550W RMS\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: \u0026lt;0.02%\u003c\/li\u003e\n\u003cli\u003eSignal to noise: over 103dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 40kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.5V – 8V\u003c\/li\u003e\n\u003cli\u003eFuse rating: 2 x 40A\u003c\/li\u003e\n\u003cli\u003eDimensions: 210 x 62 x 416 mm (W x H x L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eREF 500.1\u003c\/h2\u003e\n\u003ch3\u003e1-Ch. Class AB High-End Amplifier\u003c\/h3\u003e\n\u003cp\u003eZapco's Reference Series was originally conceived to replace the Studio Series, with the first range completed in 2001. Initially called AG, it was Zapco's first attempt to bring the qualities of their legendary amplifiers to a more accessible price point, and it was very well received.\u003c\/p\u003e\n\u003cp\u003eThe current Reference Series builds on that foundation, targeting high audio performance at its price point. It comprises four models spanning 1, 2, 4 and 6 channels, with a revised design and carefully selected internal components. If you need to power the rest of your system, the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eZapco ST-4B\u003c\/a\u003e offers a Class AB full-range option for the remaining channels.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1-channel, Class AB high-end amplifier\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio of over 103dB\u003c\/li\u003e\n\u003cli\u003eHigh-quality bipolar-input dual op-amp\u003c\/li\u003e\n\u003cli\u003eHigh-quality, high-transition-frequency transistors\u003c\/li\u003e\n\u003cli\u003eHigh-precision 0.1% output resistors\u003c\/li\u003e\n\u003cli\u003eHigh-density, low-loss-factor input capacitors\u003c\/li\u003e\n\u003cli\u003eLow internal resistance power capacitors\u003c\/li\u003e\n\u003cli\u003eUltra-low on-resistance, fast-switching MOSFETs\u003c\/li\u003e\n\u003cli\u003eHigh-power pure copper transformers\u003c\/li\u003e\n\u003cli\u003eLow resistance fuses\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":53179214496010,"sku":"92990","price":999.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ref500.1.jpg?v=1781009693"},{"product_id":"zapco-ref-150-4-amp-4-channel-class-ab-bridgeable-amplifier-4x150w-rms","title":"Zapco REF 150.4 Amp 4 Channel Class AB Bridgeable Amplifier 4x150w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco REF 150.4 is a 4-channel Class AB bridgeable amplifier from the Zapco Reference Series, delivering 4 x 150W RMS at 4 ohms, 4 x 230W RMS at 2 ohms, or 2 x 470W RMS bridged at 4 ohms.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower at 4 ohms: 4 x 150W RMS\u003c\/li\u003e\n\u003cli\u003ePower at 2 ohms: 4 x 230W RMS\u003c\/li\u003e\n\u003cli\u003eBridged power: 2 x 470W RMS at 4 ohms\u003c\/li\u003e\n\u003cli\u003eTHD at rated power: under 0.02%\u003c\/li\u003e\n\u003cli\u003eSignal to noise: over 102dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz to 40kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.5V to 8V\u003c\/li\u003e\n\u003cli\u003eFuse rating: 2 x 40A\u003c\/li\u003e\n\u003cli\u003eDimensions: 210 x 62 x 416mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eREF 150.4 4-channel Class AB high-end amplifier\u003c\/h2\u003e\n\u003cp\u003eThe Reference Series (originally called AG) was Zapco's first attempt to make the qualities behind the Zapco legend accessible across a broader range of amplifiers. The first full Reference Series line-up was completed in 2001 and was very well received. The current range comprises four models — 1, 2, 4, and 6 channels — featuring a refined design and carefully selected internal components for best-in-class audio performance. If you need a 4-channel option at a lower power output, the \u003ca href=\"\/products\/zapco-st-4b-amp-4-channel-class-ab-full-range-bridgeable-amplifier-4x-65w-rms\"\u003eZapco ST-4B 4-channel Class AB bridgeable amplifier\u003c\/a\u003e is also worth considering.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4-channel, Class AB, high-end amplifier\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio of over 102dB\u003c\/li\u003e\n\u003cli\u003eHigh-quality bipolar-input dual OP\u003c\/li\u003e\n\u003cli\u003eHigh-quality\/transition frequency transistors\u003c\/li\u003e\n\u003cli\u003eHigh-precision 0.1% output resistors\u003c\/li\u003e\n\u003cli\u003eHigh-density, low loss factor input capacitors\u003c\/li\u003e\n\u003cli\u003eLow internal resistance power capacitors\u003c\/li\u003e\n\u003cli\u003eUltra low on-resistance, fast switching MOSFETs\u003c\/li\u003e\n\u003cli\u003eHigh-power pure copper transformers\u003c\/li\u003e\n\u003cli\u003eLow resistance fuses\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":53179267809546,"sku":"92991","price":1299.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/ref150.4.jpg?v=1781010549"},{"product_id":"zapco-st-105d-amp-5-channel-class-d-compact-full-range-bridgeable-amplifier","title":"Zapco ST-105D Amp 5-Channel Class D Compact Full Range Bridgeable Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco ST-105D is a 5-channel Class D compact full range bridgeable amplifier rated at 4 x 80W + 1 x 200W RMS at 4 ohms, from Zapco's ST-D Compact Series. It powers a full front\/rear speaker setup plus a subwoofer from a single, slim chassis.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: ST-105D\u003c\/li\u003e\n\u003cli\u003eChannels: 5, full range, Class D\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 4 x 80W + 1 x 200W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 4 x 130W + 1 x 300W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 2 x 250W + 1 x 300W RMS\u003c\/li\u003e\n\u003cli\u003eInputs: low level and speaker level\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz – 20kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eDimensions: 124 x 50 x 303 mm (W x H x L, overall)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eST-105D — 5-Channel Class D Compact Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe ST-D Compact Series reduces the chassis dimensions of Zapco's earlier ST-III amps — down to 124 mm wide and 50 mm tall — without compromising performance or control. If you need a 4-channel version in the same compact Class D format, the \u003ca href=\"\/products\/zapco-st-104d-sq-iii-amp-4-channel-class-d-compact-amplifier-4x100w-rms\"\u003eZapco ST-104D SQ III\u003c\/a\u003e is also available.\u003c\/p\u003e\n\u003cp\u003eDespite the small footprint, the ST-105D includes RCA and speaker level inputs, variable input gain, a variable electronic crossover, and a variable bass boost — giving you full control over your system tuning.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e5-channel, full range, Class D\u003c\/li\u003e\n\u003cli\u003eLow and speaker level inputs\u003c\/li\u003e\n\u003cli\u003eVariable input gain control\u003c\/li\u003e\n\u003cli\u003eVariable electronic crossover\u003c\/li\u003e\n\u003cli\u003eVariable bass boost control\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":53278541021450,"sku":"93225","price":399.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/zapcost105d.jpg?v=1782817343"},{"product_id":"zapco-ref-150-6-6-channel-class-ab-amplifier-6x150w-rms","title":"Zapco REF 150.6 6 Channel Class AB Amplifier 6x150w RMS","description":"\u003cp\u003e\u003cstrong\u003eThe Zapco REF 150.6 is a 6-channel Class AB car amplifier from the Zapco Reference Series, rated at 6 x 150W RMS at 4 ohms, 6 x 220W RMS at 2 ohms, or bridged to 3 x 450W RMS.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: REF 150.6\u003c\/li\u003e\n\u003cli\u003eChannels: 6, Class AB\u003c\/li\u003e\n\u003cli\u003ePower @ 4 ohms: 6 x 150W RMS\u003c\/li\u003e\n\u003cli\u003ePower @ 2 ohms: 6 x 220W RMS\u003c\/li\u003e\n\u003cli\u003eBridged @ 4 ohms: 3 x 450W RMS\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt;102dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10Hz – 40kHz ±1dB\u003c\/li\u003e\n\u003cli\u003eFuse rating: 3 x 40A\u003c\/li\u003e\n\u003cli\u003eDimensions: 210 x 62 x 480 mm (W x H x L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eREF 150.6 — 6-Channel Class AB High-End Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe Reference Series was originally developed to replace the Studio Series, with the first models completed in 2001. Initially known as the AG range, it was Zapco's first effort to bring the qualities behind the Zapco name to a more accessible amplifier line. The new Reference Series continues that goal, targeting high audio performance at its price point, with four models spanning 1, 2, 4 and 6 channels alongside a revised design and carefully selected internal components.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e6-channel Class AB high-end amplifier\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio \u0026gt;102dB\u003c\/li\u003e\n\u003cli\u003eHigh-quality bipolar-input dual op-amp\u003c\/li\u003e\n\u003cli\u003eHigh-quality, high-transition-frequency transistors\u003c\/li\u003e\n\u003cli\u003eHigh-precision 0.1% output resistors\u003c\/li\u003e\n\u003cli\u003eHigh-density, low-loss-factor input capacitors\u003c\/li\u003e\n\u003cli\u003eLow internal resistance power capacitors\u003c\/li\u003e\n\u003cli\u003eUltra-low on-resistance, fast-switching MOSFETs\u003c\/li\u003e\n\u003cli\u003eHigh-power pure copper transformers\u003c\/li\u003e\n\u003cli\u003eLow-resistance fuses\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zapco","offers":[{"title":"Default Title","offer_id":53448488059146,"sku":"93540","price":1299.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/files\/REF150.6.jpg?v=1785332688"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5431\/0922\/collections\/b4d8c3dc6bd4922faf7386526cc77e0e_024c1650-a13f-40b9-9536-fc77bac17125.png?v=1792187834","url":"https:\/\/www.cen.uk\/collections\/zapco-amplifiers.oembed","provider":"CEN","version":"1.0","type":"link"}