Phoenix Gold ZXM400.4ISO 4-Channel Mini Amplifier

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OEM Integration Made Simple. Mini in size, Maximum in Power and Compatibility.

The ZXM400.4ISO Plug & Play mini amp is the perfect solution for upgrading OEM audio without needing the more advanced ZDA DSP amplifier. Designed from the ground up for true plug & play installation, this ISO mini amp connects seamlessly via our complete ecosystem of plug & play harnesses, allowing you to upgrade over 2,000 vehicles without cutting, splicing, or modifying factory wiring.

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Despite its ultra-compact size, the ZXM400.4ISO delivers clean, efficient, and powerful Class-D amplification suitable for both OEM and aftermarket systems. Engineered for direct integration, it’s the ideal choice for drivers who want better sound quickly and reliably.

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Why Choose the ZXM400.4ISO?

100% Plug & Play – Designed to work directly with our complete plug & play harness range.

OEM-Ready ISO Design – Perfect for factory audio upgrades with no coding or complexity.

Compact & Powerful – Mini chassis, big performance.

Simple Installation – No cutting, no complications, connect and enjoy.

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Features at a Glance

Class-D efficiency and clean output

Short circuit / thermal/high-low voltage protection

Excellent signal-to-noise ratio & FM noise rejection

LED status indicator

Surface-mount technology for reliability

Ultra-small footprint for easy mounting

Auto-start with high-level input

Fully adjustable high-pass & low-pass filters

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Specifications

Class-D 4-Channel Mini Amplifier

Power (MAX): 1000W

RMS Power:

125W x 4 @ 2Ω

60W x 4 @ 4Ω

250W x 2 @ 4Ω bridged

Frequency Response: 20Hz–20kHz

Signal to Noise Ratio: > 90dB

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 Auto Turn-On: Yes

Input Mode: 2CH / 4CH

OIS – OEM Impedance Simulation: Yes

Operating Voltage: 7V–16.5V

Idle Current: 0.70A

Max Current Draw: 48A

Total Efficiency (4Ω): 90%

Power Terminal: 10mm²

Speaker Terminal: 1mm²

Dimensions (w/ Feet): 165 × 83.1 × 34.8 mm

Dimensions (w/o Feet): 149 × 83.1 × 34.8 mm

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Why choose Phoenix Gold:

Phoenix Gold exists to deliver a car audio experience of musical realism that will have you questioning whether you’re riding around in a music studio or 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.