ESX Quantum QS-TWO 2-channel Class D amplifier 380W

Article number: 11009035
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  Efficient Class D amplifier with ultra-compact dimensions
  Heavy cast heat sink with optimal cooling properties
  High level inputs with Error Protection System
  RCA inputs
  Stereo RCA output for active subwoofers, for example


The QUANTUM QS-TWO is a compact power amplifier that impresses with its impressive performance and high-quality sound characteristics. With an output of 2 x 95 watts RMS, it is by no means slender, but effortlessly drives loudspeaker systems with 4, 3 or 2 Ω impedance. It remains extremely stable even with critical loads. When it comes to subwoofers, the QS-TWO with its mono bridge output of 190 watts RMS at 4 Ω can generate plenty of bass.

The QS-TWO is not only characterized by its power, but also by its high-end sound. With a huge bandwidth of up to 60,000 Hz and a sensationally low distortion factor of less than 0.007% (THD+N @ 5W), it plays in the top class and is ideal for HD audio.

Thanks to ESX's outstanding Class D technology, the QS-TWO offers an impressive efficiency of up to 90% and is EMC interference-free. This means that it saves power, reduces the load on the vehicle's electrical system and protects the high-quality components from overheating. The high efficiency also allows the use of thinner power cables, which makes installation easier.

For convenient installation, there is the QS-TWO-ISO, which can be connected directly behind the car radio using a pre-assembled ISO wiring harness. Alternatively, the cinch inputs or the integrated high-level inputs (with error protection system) can also be used to control the signal.

The QS-TWO also impresses with its additional features. It has RCA inputs (via Molex) and a stereo RCA output, which can be used for active subwoofers, for example. The HPF/LPF function is switchable and enables optimum adaptation to the sound system. In addition, the QS-TWO offers an efficient Class D amplifier with ultra-compact dimensions, a robust cast heat sink with optimum cooling properties, an automatic switch-on function and is start/stop-ready.

The QUANTUM QS-TWO is the perfect choice for audio enthusiasts looking for a compact and powerful power amplifier with outstanding sound. With its efficiency, versatile connection options and first-class technical features, it sets new standards in the car audio amplifier sector.

Technical data

Manufacturer: ESX
Product name: Quantum QS-TWO
Product typ: 2-Channel Class D Nano Digital Amplifier
Amplifier power: 2 x 52/95 watts RMS @ 4/2 Ω
1 x 190 Watt RMS @ 4 Ω bridged
Speaker impedance: 2 – 8 Ohm
Operating voltage: +12 V (9 – 15 V), negative to ground
Dimensions: 70 x 35 x 90 mm (W x H x L)

Scope of delivery

  • 1 x ESX Quantum QS-TWO
Klangvilla in Leipzig
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