Cookie Consent by


 The newly developed ESX QUANTUM QE series is a class of its own. Conventional high power digital amplifiers usually cause interferences in the vehicle and disturb the radio reception. Not so with the new QE models: During the development period, special attention was paid to achieve an emission-free music playback. Also the sound is perfect,  because high-quality components guarantee an audiophile sound experience at its best. Visually, the new five flagships are based on the previously established QUANTUM QE DSP amps with integrated DSP and thus to that they enable versatile combinations. The features are also impressive: Auto Turn-On Function, EPS, variable crossover filters – everything your heart desires is on board. High-quality connectors and screwed RCA sockets complete the perfect appearance. All amplifiers are delivered with a sophisticated level remote control, which can be installed very space-saving with or without housing. The ingenious 4-channel power amplifier QE1200.4 was awarded with the prestigious and coveted EISA Award in the category “IN-CAR AMPLIFIER” as “Best Product 2019-2020”.

• Advanced Class D technology with very high efficiency

• Selected and audiophile tuned components

• Massive aluminum heat sink

• Heavy 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

QE1200.4 € 599,00*

4-Channel Class D Digital Amplifier

1200 Watts RMS Output Power

4 x 200/300 Watts RMS @ 4/2 Ohms

2 x 600 Watts RMS @ 4 Ohm bridged

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

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

Bass Boost 0-12 dB, Bandpass Mode, Input Mode

High Level Inputs, Auto Turn-On Function

Compact Bass Remote

Dimensions: 280 x 46 x 165 mm

Efficiency up to 84%


Owner's Manual

Test Review

EISA Award

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