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Digital amplifier power has never been more compact and affordable: With a size of just 190 x 35 x 102 mm, the three new ESX QUANTUM QM miniature power plants are convincing all along the line. The QM amps offer state-of-the-art technology in a very small space and are all solidly constructed. All three amps are based on the somewhat larger sibling models of the ESX QL series, only a bit more compact and much easier to install. Thanks to the high level inputs including EPS and the automatic turn-on function, they are also perfectly suited for integration in factory sound systems. Each model is also equipped with a compact bass level remote control.

• Advanced Class D technology with very high efficiency

• Selected and audiophile tuned components

• Compact aluminum heat sink and lateral die-cast parts

• High Level Inputs with Error Protection System

• Auto Turn-On Function, Start/Stop Ready

• MOSFET PWM-Power Supply, 3-way Protection Circuit

• Compact Bass Remote

QM500.4 € 249,00*

4-Channel Class D Mini Digital Amplifier

500 Watts RMS Output Power

4 x 80/125 Watts RMS @ 4/2 Ω

2 x 250 Watts RMS @ 4 Ω bridged

HPF 50-5000 Hz (CH1/2), HPF 10-500 Hz (CH3/4)

LPF 50-5000 Hz (CH3/4), Copy-Modus CH3/4 > CH1/2

Bandpass Mode

RCA  & High Level Inputs via wire harness

High Level Inputs, Auto Turn-On Function

Compact Bass Remote

Dimensions: 190 x 35 x 102 mm

Efficiency up to 89%


Owner's Manual

Test Review

* Manufacturer's suggested retail price, changes and mistakes reserved