Amp Box RS

  • Fully balanced double mono design (Pulse Wave Modulation) 
  • 2Ω drive capability 
  • Tube buffer stage with reference quality



The Amp Box RS is a true audiophile power amplifier that is capable of powering large speakers effortlessly. Inside the Amp Box RS there is a fully balanced mono design utilising highly efficient energy saving PWM modules and a Tube buffer input stage.

Thanks to these characteristics the Amp Box RS avoids sounding too ‘digital’ and presents a warm and colourful sound. Not only can you guarantee an audiophile grade sound from the Amp Box RS it also delivers perfect micro dynamics and 3-dimensional sound staging.

Audio loop-outputs and Trigger In/Out on the Amp Box RS make it perfect for Bi– or Tri-Amping options.

The Amp Box RS is perfectly partnered with Pro-Ject’s Pre Box RS or Pre Box RS Digital for your pre amplification and also can be paired with the Power Box RS Amp for even better sound staging and power handling.

Available in Black or Silver casework.

Key Features:

  • Fully balanced double mono design (Pulse Wave Modulation) 
  • Highly efficient conversion from mains to output power (92%) 
  • 2Ω drive capability 
  • Tube buffer stage with reference quality 
  • SMD construction for shortest signal paths 
  • Low heat emission 
  • Line level preamp inputs (RCA & XLR) 
  • Top-quality speaker terminals 
  • Luxury metal casing protects against vibration and interference 

Technical Data

Power Output: 2x 110W at 8Ω
2x 180W at 4Ω
Frequency Response: 10Hz - 50kHz (+0dB, -3dB)
THD: < 0.1% At 90W
Noise Floor: > -90dB (IEC -A)
Gain: 40dB
Input: RCA & XLR Sockets 
Input Sensitivity: 1.5V 
Input Impedance: 22kΩ 
Speaker Connectors: 4mm Ø Banana Plugs
Spades Connectors
or Naked Wire
Trigger 12V DC: In & Out, 2-Pole Jack Ø 2.5mm
External Power Supply: 48V/2.5A DC;
100 - 240V, 50/60Hz
Dimensions: 208 x 72 x 194mm
Weight:  2120g (Without PSU)
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