ESX QE900.4 – 900 Watts 4-Channel Class D Digital Amplifier
Produit disponible sous 6 jours.
SKU: QE900.4
Category: 4 Channel Amplifiers - Power and Clarity, Amplifiers and DSP, ESX, Home Page, PROMO
Vendeur:ESX

ESX QE900.4 – 900 Watts 4-Channel Class D Digital Amplifier
Full description
The ESX QE900.4 is part of the new QUANTUM QE series, developed to offer an exceptional audio experience without interference with the vehicle's radio system. Unlike conventional digital amplifiers, this model guarantees music playback without disturbing emissions , thanks to its EPS® (Error Protection System) circuit .
Featuring high-quality components , a solid aluminum heat sink , and variable crossover filters , the ESX QE900.4 delivers powerful, accurate sound. Its Copy mode allows you to duplicate channel 3/4 settings to channel 1/2, simplifying setup and sound optimization.
With a MOSFET PWM power supply , a 3-way protection circuit , and a Start/Stop Ready mode , this amplifier is designed for high-end configurations . It comes with a compact level remote control , allowing easy adjustment of the bass volume.
🔹 Main Features
- Advanced Class D technology with high energy efficiency (84%)
- EPS® (Error Protection System) : Protection against radio interference
- Selected audiophile components for high-fidelity sound
- Solid aluminum heat sink with cast iron side elements
- Variable high-pass filters (HPF) and low-pass filters (LPF) for optimal customization
- Bandpass and Bass Boost function (0-12 dB)
- Copy mode to duplicate CH3/4 settings to CH1/2
- High-level inputs with automatic activation (Auto Turn-On Function)
- MOSFET PWM power supply and 3-way protection circuit
- Start/Stop Ready mode compatible with modern vehicles
- Compact level remote control included
📊 Technical specifications
Characteristic | Details |
---|---|
Kind | 4-channel Class D amplifier |
RMS power | 4 x 150/225 Watts @ 4Ω/2Ω |
Bridged RMS power | 2 x 450 Watts @ 4Ω |
High-pass filter (HPF) CH1/2 | 50 - 5000 Hz |
High-pass filter (HPF) CH3/4 | 10 - 500 Hz |
Low-pass filter (LPF) CH3/4 | 50 - 5000 Hz |
Bass Boost | 0 - 12 dB |
Bandpass function | Yes |
Copy Mode | CH3/4 > CH1/2 |
Input selector | Yes |
Dimensions | 280 x 46 x 165 mm |
Efficiency | Up to 84% |
📦 Package Contents
- 1 ESX QE900.4 Amplifier
- Compact level remote control
- Installation Manual
📎 Additional accessories (sold separately)
- High quality power cables
- Shielded RCA cables
- Compatible speakers and subwoofers
📄 ESX QE900.4 Instructions (PDF)
The ESX QE900.4 is the ideal amplifier for car audio enthusiasts looking for reliable power , audiophile sound , and a complete absence of radio interference . Thanks to its advanced filters and EPS® circuitry , it ensures an unparalleled sound experience.

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