Phoenix Gold ZXM500.4i 4-Channel Mini Amplifier

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The ZXM500.4i builds on the success of the ZXM500.4, offering upgraded performance, simplified installation, and expanded compatibility all within the same ultra-compact chassis. Engineered with precision Class-D technology, it delivers clean, efficient, and powerful sound that suits any environment.

What’s New in the ZXM500.4i

Selectable Load Resistors – Fine-tune for optimal power and system matching.

Quick Connectors – Fast, secure, and tool-free installation for power and signal terminals.

20V High-Level Input – Expanded input range for seamless OEM integration.

Auto Start / Remote Trigger Switch – Choose between automatic or manual activation.

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ZXM500.4i Key Features

Massive Power & Performance

Full Class-D technology offers efficiency & performance

Short circuit/thermal and high/low voltage protection

Excellent signal-to-noise ratio and FM noise rejection

Built-in protection LED light status indicator

Surface mount component technology

Ultra small size for easy installation

Autostart on high-level input

Full adjustable HP & LP filter

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ZXM500.4i Specifications

Class-D 4-Channel Mini Amplifier

Power (MAX) 1000W

Power Ratings (RMS)

125W x 4 @ 2Ohm

80W x 4 @ 4Ohm

250W x 2 @ 4Ohm bridged

Frequency Response: 20Hz – 20kHz

Signal to Noise Ratio: > 90dB

Total Harmonic Distortion (THD): < 1%

Low Pass Filter: 40Hz – 400Hz (12dB/Oct)

High Pass Filter: 40Hz – 400Hz (12dB/Oct)

Crosstalk:-45dB

Input Sensitivity:0.45V – 20V

High-Level Input Auto Turn-On

Input Mode: 2CH / 4CH

OIS – OEM Impedance Simulation:Yes

Operating Voltage:7V – 16.5V

Idle Current:0.70A

Current Draw (Max):48A

Total Efficiency (4Ω):90%

Power Terminal:10mm²

Speaker Terminal:1mm²

Dimensions (LxWxH) (Excluding Feet):149 x 83.1 x 34.8mm

Dimensions (LxWxH) (Including Feet):165 x 83.1 x 34.8mm

Dimensions (LxWxH) 165 x 83.1 x 34.8mm

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Why choose Phoenix Gold:

Phoenix Gold exists to give you a car audio experience of musical realism that will have you questioning if you’re riding around in a music studio or are sitting in the front row of a rock concert. Our product line is the result of a continued dedication to our key values of performance, innovation, quality, and excellence, bringing you The Gold Standard in Sound.