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

£145.83 Exc. VAT |  


Pro-Ject Amp Box S2 Stereo Power Amplifier

Advanced power amplifier design
Perfect companion to S2 pre-amplifiers
Premium S2 construction


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.

Key Features:

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

Technical Data

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)


Power Output: 2 x 110W/180W At 8ohms/4ohms 
(2x 180/250 W @ 8/4 Ohms With PS Box RS)
2 Ohms Drive Capability
Frequency Response: 10Hz - 50kHz (+0dB, -3)
THD: < 0.1% At 90W
Noise Floor: > -90dB (IEC -A)
Gain: 40dB
Input: RCA & XLR Sockets 
Input Sensitivity: 1.5V 
Input Impedance: 100Kohms 
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 W x H x D: 208 x 72 x 194mm

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