Shop by Price
Pro-Ject Amp Box S Stereo Power Amplifier
Zoom  Zoom

Pro-Ject Amp Box S Stereo Power Amplifier

£165.83 Exc. VAT |  


Manufacturer:  Pro-Ject



Pro-Ject Amp Box S Stereo

The Pro-Ject Box Design Amp Box S is an ultra-compact power amplifier, which is both efficient and audiophile. Boasting an impressive 30 Watt output, this small but perfectly formed box will boost any small hi-fi system.

A ultra-high-efficiency, Bi-Phase PWM (Pulse Wave Modulation) circuit with SMD parts gives outstanding audio performance and stays cool on the outside when in use. The sound quality from the Amp Box S is aimed to be as close as possible to Class A tube amplifiers, with their liquid and life-like presentation.

The Amp Box S is micro-sized, allowing for easy placement in any environment. It can also be remotely switched off via a trigger signal (a 45cm power-on cable is supplied for this purpose) for convenient operation. When bi- or tri-amping, this remote power signal can also be relayed to multiple units. 



Bi-Phase PWM(Pulse Wave Modulation) circuit 

Discrete design for ultra-dynamic playback and highest resolution 

SMD for short signal paths 


Ultra high-efficiency: approximately 80% of power consumption goes to “power out” 

Gold-plated, over-sized binding posts 

Trigger-switching with Loop-out 

RCA-Loop-out, for Bi-Amping, etc 

Metal case shields the electronics from vibrational and electromagnetic interference 

Outboard power supply included 


Power Output:

2 x 20W at 8Ω (Both Channels Driven)
2 x 30W at 4Ω (Both Channels Driven)

Frequency Response:

5Hz - 20kHz (+ 0dB, - 0.5dB)

Channel Separation:

>40dB At 20kHz

Noise Floor:

> -100dB (A Weighted)


< 0.05% At 10W




1 Pair RCA/Phono Sockets

Input Sensitivity:


Input Impedance:


Speaker Connectors:

Gold-Plated Terminals For...
4mm Ø Banana Plugs, Spades Or Naked Wire


12V DC Switching Voltage

Trigger In/Out:

2-Pole 2.5mm Ø Co-Axial Jack

Outboard PSU:

20V/3A DC (Peak 7A DC)

Standby Power:

< 1W

Dimensions (W x H x D):

103 x 38 x 141mm


670g (Without PSU)


Be the first to Write a Review for this item!

Customers who bought this item also bought:

01733 350 878
GBP EURO USD YEN   TOTAL: £0.00    View Basket