Phoenix Gold ZXM500.4 Amp ZX Series Class D Bridgeable 4 Channel Mini Amplifier
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The Phoenix Gold ZXM500.4 is a Class D bridgeable 4-channel mini amplifier from the ZX Series, rated at 500W RMS total — 4 x 80W at 4 ohms, 4 x 125W at 2 ohms, or 2 x 250W bridged at 4 ohms.
Key specifications
- Channels: 4 (Class D), bridgeable
- RMS power: 4 x 80W @ 4 ohm / 4 x 125W @ 2 ohm
- Bridged: 2 x 250W @ 4 ohm
- Max power: 1000W
- Filters: HP and LP 40Hz – 400Hz (12dB/Oct)
- Frequency response: 20Hz – 20kHz
- Inputs: 2CH or 4CH, low or high level
- Dimensions: 165 x 83.1 x 34.8mm
ZX Series plug and play installation
The ZXM500.4 is a 4-channel Class D mini amplifier built to be as compact as possible without sacrificing sound quality, power or features. Its ultra-small footprint makes it straightforward to install in tight spaces. If you also need a subwoofer channel, the Phoenix Gold ZXM500.1 mono mini amp pairs directly with it. To wire everything up cleanly, the Phoenix Gold ZXK10 7 AWG amplifier wiring kit is a compatible installation accessory.
Key features
- Full Class D technology for efficiency and performance
- Short circuit, thermal, and high/low voltage protection
- Built-in protection LED status indicator
- Excellent signal-to-noise ratio and FM noise rejection
- Low EMI emissions — does not interfere with vehicle electronics or FM signal
- Surface mount component technology
- Ultra-small size for easy installation
- Autostart on high-level input
- Fully adjustable HP and LP filters
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Specification
| Frequency Response | 20Hz – 20kHz |
|---|---|
| Signal to Noise Ratio | > 90dB |
| Total Harmonic Distortion | < 0.3% |
| Low Pass Filter | 40Hz – 400Hz (12dB/Oct) |
| High Pass Filter | 40Hz – 400Hz (12dB/Oct) |
| Dimensions | (LxWxH) 165 x 83.1 x 34.8mm |
More specs
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What's Included
- Phoenix Gold ZXM500.4
Phoenix Gold
About the Phoenix Gold ZXM500.4
From our tech experts at CEN
The Phoenix Gold ZXM500.4 is a Class D bridgeable 4-channel mini amplifier from the ZX Series, rated at 4 x 80W RMS at 4 ohms, 4 x 125W RMS at 2 ohms, or 2 x 250W RMS bridged at 4 ohms. At 165 x 83.1 x 34.8mm, it fits where a standard amplifier cannot. High-level input with auto turn-on means it works directly with a factory head unit.
Who it suits
It suits drivers who need a capable 4-channel amplifier but have limited space, such as under a seat or in a small boot. For a step up with a built-in subwoofer channel, consider the Phoenix Gold ZXM700.5.
Our tech experts advise
If you also need a subwoofer channel, the Phoenix Gold ZXM500.1 mono mini amp is designed to pair with it. Both high-pass and low-pass filters are adjustable from 40Hz to 400Hz, giving you flexibility over crossover points. Car audio installation is priced per vehicle — see our Nottingham fitting service for details.
Explore the full Phoenix Gold range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Phoenix Gold
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the Phoenix Gold ZXM500.4 produce?
A: It delivers 4 x 80W RMS at 4 ohms, 4 x 125W RMS at 2 ohms, or 2 x 250W RMS bridged at 4 ohms.
Q: Can the ZXM500.4 run from a factory stereo?
A: Yes. It has a switch for 2-channel or 4-channel input at low or high level, and auto turn-on from the high level input.
Q: How big is the ZXM500.4?
A: It measures 165 x 83.1 x 34.8mm, small enough for discreet installs.
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