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With an impressive 2 x 95 watts RMS at 2 ohms, the little QS-TWO is anything but slim. On the contrary, it drives loudspeaker systems with 4, 3 or 2 ohms impedance without difficulty and remains very stable even under critical loads. With a mono bridge output of 190 watts RMS at 4 ohms, it can also elicit a lot of bass from subwoofers. Incidentally, it impresses with its high-end sound: thanks to the huge bandwidth of up to 60,000 Hz and a sensationally low distortion factor of <0.007% (THD + N @ 5W), the QS-TWO is way ahead. Perfect for HD AUDIO.


ESX masters the construction of Class D power amplifiers so well that the QS-TWO can come up with a sensational efficiency of up to 90% and EMC interference-free. The modern technology saves electricity, relieves the vehicle electrical system and protects the high-quality components from overheating. Thanks to the high degree of efficiency, no annoying thick power cables need to be pulled. If you want it to be very easy, you can use the QS-TWO-ISO, which can be supplied via a pre-assembled ISO cable harness, e.g. can be connected behind the car radio. On the signal side, the QS-TWO is controlled via RCA or alternatively via the integrated high level inputs (with EPS).

QS-TWO-ISO € 175,00*

2-Channel Class D Nano Digital Amplifier

380 Watts Max. Output Power

with ISO Plug+Play Wire Harness (60 cm)

2 x 52/95 Watts RMS @ 4/2 Ohms

1 x 190 Watts RMS @ 4 Ohm bridged

Highpass/Lowpass switchable @ 80 Hz

Ultra-low THD+N @ 5W/RMS < 0,007%

Frequency Range 10 Hz – 60 kHz

Perfect for HD Audio

2-Channel RCA Line Out for e.g. active Subwoofers

High Level Inputs with EPS
Auto Turn-On Function

Up to 90% Efficiency

Dimension: 70 x 35 x 90 mm


Owner's Manual

Test Review

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