Phoenix Gold ZXM400.4ISO Compact Plug & Play ISO Mini Amplifier

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. 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. 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.

Specifications Class-D 4-Channel Mini Amplifier Power (MAX): 1000W RMS Power: 125W x 4 @ 2Ω 80W 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