Phoenix Gold ZXM500.4i 4-Channel Mini Amplifier

The Phoenix Gold ZXM500.4i builds on the success of the award-winning ZXM500.4, offering upgraded performance, simplified installation and expanded compatibility within the same ultra-compact chassis. Engineered with precision Class-D technology, it delivers 4 x 80W RMS at 4 Ohm, 4 x 125W RMS at 2 Ohm or 2 x 250W bridged – 1000W max – from an amplifier that fits in the palm of your hand, making it the ideal choice for under-seat installs and OEM upgrades where space is at a premium.

Key Features

Selectable Load Resistors: New in the i version: fine-tune the amplifier for optimal power and system matching with modern factory head units
Quick Connectors: Fast, secure and tool-free installation for power and signal terminals
20V High-Level Input: Expanded 0.45V – 20V input range for seamless OEM integration, with OIS (OEM Impedance Simulation) built in
Auto Start / Remote Trigger Switch: Choose between automatic turn-on from the high-level signal or manual activation via the remote wire
Massive Power in a Mini Chassis: 4 x 80W @ 4 Ohm, 4 x 125W @ 2 Ohm or 2 x 250W bridged @ 4 Ohm; 2CH / 4CH input mode selectable
Fully Adjustable HP & LP Filters: High-pass and low-pass filters from 40 Hz to 400 Hz (12 dB/Oct) on all channels
Full Class-D Technology: 90% efficiency with excellent signal-to-noise ratio and FM noise rejection

Technical Specifications

Amplifier Class: Class-D 4-channel mini amplifier
Max Power: 1000W
RMS Power: 80W x 4 @ 4 Ohm / 125W x 4 @ 2 Ohm / 250W x 2 @ 4 Ohm bridged
Frequency Response: 20 Hz – 20 kHz
Signal to Noise Ratio: >90 dB
THD: <1%
Low Pass Filter: 40 Hz – 400 Hz (12 dB/Oct)
High Pass Filter: 40 Hz – 400 Hz (12 dB/Oct)
Crosstalk: -45 dB
Input Sensitivity: 0.45V – 20V
Input Mode: 2CH / 4CH
Operating Voltage: 7V – 16.5V
Total Efficiency (4 Ohm): 90%
Power Terminal / Speaker Terminal: 10mm² / 1mm²
Dimensions (L x W x H): 165 x 83.1 x 34.8 mm (6.50″ x 3.27″ x 1.37″) incl. feet

The Phoenix Gold ZXM500.4i is the next evolution of compact power and precision – big performance that hides almost anywhere.

7V – 16.5V

Phoenix Gold ZXM500.4i