Zapco
CEN is an authorised UK reseller of Zapco, the cult American amplifier and DSP brand with a loyal sound-quality following.
We carry Zapco amplifiers and DSP units at up to £1,299. Zapco amplifiers and DSP units are built for clean, powerful output and precise tuning, making Zapco a favourite for competition and audiophile installs alike.
Save 6% Zapco REF 150.4 Amp 4 Channel Class AB Bridgeable Amplifier 4x150w RMS RRP£1,379.00£1,299.00 / Save 6%Low stock
Save 3% Zapco REF 500.1 Amp Mono 1 Channel Class AB Subwoofer Amplifier 320w RMS RRP£1,029.00£999.00 / Save 3%Low stock
About Zapco
Zapco is one of American car audio's founding houses — building amplifiers in California since the mid-1970s and holding a special place among sound-quality devotees for its Studio and Z-series amplification and its early leadership in balanced signal transfer. Modern Zapco spans honest value lines through to flagship competition series, all with the brand's SQ-first voicing.
Zapco range at a glance
- Studio (ST) series: ST-1B, ST-4B and ST-5B amplifiers, compact ST-D and SQ MINI models, ST-XM III mono amplifiers, the ST-6X DSP III and the ST-A1 plug and play unit.
- Harmony (HB) series: HB II amplifiers with built-in DSP (HB 46II, HB 48II, HB 410 II and HB 810 II), compact HB D amplifiers and the HB CB20F capacitor bank.
- Z and REF series: Z-150.2 and Z-150.4 amplifiers and REF 150.4, 150.6 and 500.1 models.
- DSP and processors: the DSP-Z8 IV AT, ADSP-Z12 IV-10A and ADSP-Z16 IV-12A, the ASP-OE8 OEM interface and ASP-Q2 equaliser.
- Accessories: remote controls and the HD-BT II-D Bluetooth module.
Which Zapco amplifier should I choose?
Decide whether you need tuning built in. If you are adding an amplifier to a factory system, an amplifier with DSP such as an HB II model or the ST-6X DSP III combines power and processing in one unit. If you already have a DSP, a standalone ST, Z or REF amplifier lets you choose power and channel count freely. For subwoofers, look at the ST-XM III or REF 500.1 mono models. See more digital sound processors and amplifiers.
Zapco FAQs
Q: How long has Zapco been around?
A: Since the mid-1970s in California — one of the original American amplifier specialists.
Q: What is Zapco known for?
A: Sound-quality amplification above all; its flagship amplifiers have powered generations of competition-winning SQ installs.
Q: Does Zapco make affordable amps?
A: Yes — the modern range starts at genuinely accessible prices while keeping the SQ voicing.
Q: Is CEN an authorised Zapco reseller?
A: Yes. CEN is an authorised UK reseller of Zapco — every product is genuine UK stock with full manufacturer warranty support.
Q: Can CEN install Zapco products?
A: Yes — professional installation from our Nottingham premises, from single components to complete systems.
Q: Can Zapco work with my factory stereo?
A: Yes. Models such as the ASP-OE8 convert OEM speaker-level signals, and the DSP amplifiers can be tuned to suit a factory head unit.
Q: Can I stream to a Zapco DSP?
A: The HD-BT II-D Bluetooth module is listed as compatible with HDSP-V, ADSP-IV and ST-X DSP III units.
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