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Pro-Ject Amp Box S2 Stereo Power Amplifier
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Pro-Ject Amp Box S2 Stereo Power AmplifierPro-Ject Amp Box S2 Stereo Power AmplifierPro-Ject Amp Box S2 Stereo Power Amplifier

Pro-Ject Amp Box S2 Stereo Power Amplifier

  (1 Review)
£165.83 Exc. VAT |  


Pro-Ject Amp Box S2 Stereo Power Amplifier

The Amp Box S2 is designed to deliver room-filling sound to almost any loudspeaker.

Despite its small dimensions, the Amp Box S2 delivers sound characteristics similar to that of a tube amplifier, with a rich musical performance and a touch of analogue warmth. The advanced amplifier modules used are highly efficient, easily driving almost any loudspeaker with almost no energy wastage. 

The small size makes Amp Box S2 easy to place in any living space. Partner with a Box Design S2 (or any other) pre-amplifier by the RCA inputs and build a compact hi-fi system that delivers a premium sound. The 12V trigger input allows the amplifier turn on in tandem with the Pre Box S2 Analogue, while the Trigger Output allows for bi- or even tri-amplification systems. The isolated speaker terminals provide a solid and reliable connection to your loudspeakers.

Housed within the improved S2 chassis, the Amp Box S2 is a premium device that belies the price.


  • Ultra compact power amplifier
  • Audiophile, tube-like sound performance
  • Advanced amplifier module used
  • Stereo input (RCA)
  • Isolated speaker sockets
  • Suitable for Banana/Spade/Pin/bare wire
  • Trigger input
  • Trigger output for adding more Amp Box S2s
  • Premium S2 chassis
  • Available in black or silver


Power Output: 2x 26W at 8Ω
2x 43W at 4Ω
Frequency Response: 5Hz - 20kHz (+ 0dB, - 0.5dB)
Channel Separation: >40dB At 20kHz
Signal-to-noise ration:  76dB
THD: < 0.05% At 10W
Gain: 32dB
Input: 1x Pair RCA Sockets
Input Sensitivity: 1V
Input Impedance: 47kΩ
Speaker sockets: 4mm Ø Banana, spades.
  Pins or bare wire
Trigger: 12V DC 
Trigger In/Out: 2-pole jack socket Ø 2.5mm
Dimensions: 103 x 36 x 118mm
Weight: 670g (Without PSU)
Average Rating (1 Review):  
Write a Review and share your opinions!

Plenty of power for small room
Saturday, 10 July 2021  | 

I'm powering Bowers & Wilkins 607 S2 bookshelf speakers with this Amp Box S2. Those speakers are pretty low sensitivity at 84dB, yet I'm getting plenty of sound even at 1/2 volume. For US customers: you'll need to replace the cable that it comes with to fit your power socket. The amp comes with a power brick and detachable cable from it to your outlet. I just used a detachable cable off the back of an old TiVo box I had. Works perfectly.

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