ESX Audio

ESX QM-FOUR Quantum 4-Channel Mini Class D Amplifier

4-Channel

£169.99
Available to order
4-Channel SKU QM-FOUR Manual included
Fitment System planning support
Tech specs Available on request
Manuals/downloads Download linked
Warranty Manufacturer backed
Plan the system before checkout Check channel layout, power, impedance and DSP requirements before choosing wiring or speakers.
Why choose this product?

The ESX QM-FOUR is an ultra-compact QUANTUM Series 4-channel Class D mini amplifier for space-conscious car audio upgrades.

It delivers 4 x 52 watts RMS at 4 ohm, 4 x 90 watts RMS at 2 ohm, or 2 x 180 watts RMS bridged at 4 ohm, with flexible filtering and high-level input support for modern installations.

Key features

  • 4-channel Class D mini digital amplifier
  • 4 x 52 / 90 watts RMS at 4 / 2 ohm
  • 2 x 180 watts RMS bridged at 4 ohm
  • High-pass and low-pass filters: 40 - 4000 Hz for CH1/2 and CH3/4
  • Bass boost: 0 / 6 / 12 dB for CH1/2 and CH3/4
  • 2CH / 4CH input selector
  • RCA inputs and outputs via cable connector
  • High level inputs with Error Protection System and auto turn-on
  • Start/Stop Ready
  • Clipping LED
  • Dimensions: 216 x 39 x 84 mm
  • Efficiency up to 86%
Compatibility and support

For vehicle-specific advice, send your vehicle make, model, year, current factory audio setup and what you want to improve.

We reply by email or WhatsApp so you have the recommendation in writing.

Downloads
Download owner manual Manufacturer documentation supplied where available.

Need fitment help?

Ask before ordering if the vehicle, wiring or DSP setup is unclear.

Send the make, model, year, factory audio setup and what you want to improve. We’ll reply in writing so you have the advice to refer back to.

WhatsApp compatibility help Email us
ESX QM-FOUR Quantum 4-Channel M... £169.99