Pro-Ject - Amp Box DS Mono - Monoblock Power Amplifier 125wpc ( Each )

Pro-Ject - Amp Box DS Mono - Monoblock Power Amplifier 125wpc ( Each )

Product no.: BOXDS5-0002 (BLACK: BLACK)

can be shipped within 7 days

Price includes VAT, plus delivery

Possible delivery methods: UK Tracked with Signature, UK Express, Airmail Tracked with Signature, UK Standard

Pro-Ject Amp Box DS Mono Power Amp

The Pro-Ject Amp Box DS Mono is an ultra-efficient Bi-Phase PWM (Pulse Width Modulation) Mono amplifier circuit that delivers outstanding audio performance while consuming little energy.

This new cool-running circuitry exhibits not only 92% efficiency from AC to power output, but also exhibits extremely low signal spectrum distortion. The sound of the amplifier was voiced to the likes of Class A tube topology to deliver a liquid and lifelike musical presentation. Being it is micro-sized in comparison to its power output, the Amp Box DS Mono lends itself to be used in multiples for Bi and Tri-amplification applications.

Gold plated 5-way binding posts suitable for banana jacks, spades, pins or bare wire ensuring a reliable and stable connection. Additionally, a trigger in/out loop is provided allowing for remote on/off from you source component. A 48V external power supply is provided that is capable of the power reserves needed for demanding musical dynamics and powerful bass response.

A ultra high-efficiency Bi-Phase PWM (Pulse Wave Modulation) circuit with SMD parts gives outstanding audio performance and stays cool on the outside.

The sound quality of Amp Box DS Mono is aimed to be as close as possible to Class A tube amplifiers with their liquid and lifelike presentation. This stylish amp is compact-sized and therefore lends itself to easy placement and can be switched on & off remotely via a trigger signal. A 45cm power-on cable is supplied for this purpose. 

For Bi- or Tri-amplification use, the remote power-on signal can be relayed to further units.

Key Features:

  • Improved PWM-Circuitry (Pulse Wave Modulation)
  • Improved signal spectrum and lower distortion 
  • Discrete design for ultra-dynamic playback and highest resolution 
  • SMD for short signal paths 
  • Ultra high-efficiency: approx. 92% 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  
  • Outboard power supply included  

Technical Data:

Power Output: 1 x 125W/195W @ 8 Ohms/4 Ohms
Frequency Response: 10Hz - 50kHz (+ 0dB, - 3dB)
Signal To Noise: Ratio >-100dB (IEC -A)
THD: < 0,1% @ 90W
Gain: 26dB
Pre-amp Input: 1x RCA With Loop-Out
Input Sensitivity: 1.5V
Input Impedance: 100kohm
Speaker Port: 4mm Ø Banana, Spade Or Bare Wires
Trigger 12V DC: In&Out, 2-Pole Jack Ø 2.5mm
External Power Supply: 48V/2,5A DC;100 - 240V, 50/60Hz
Standby Power: Consumption < 1 watt
Dimensions W x H x D: 103 x 72 x 144 (163mm With Sockets)
Weight: 1290g Without Power Supply


Future Upgrade with addition of a Linear Power supply that delivers more power and further improves audio quality!  The addition of linear power supply Power Box RS Amp adds even more depth and lets you hear all microscopic fine detail.  

• Suitable for Pro-Ject Audio Systems power amplifiers  

• Replaces original “switching” power supplies  

• Almost double amplifier power output combined with Amp Box RS, Amp Box DS & Stereo Box RS

   (2x 200/120 watts 4/8 ohms)  

• Significant sound improvement with better dynamic and bass response, improved soundstage  

• Compa tible with Amp Box RS, Amp Box RS Mono, Stereo Box RS but also with Amp Box DS or Amp Box DS Mono  

• Big toroidal transformer with copper shielding  

• Very low output impedance  

• Filtration capability 40.000 uF capacitors low ESR types  

• Available in silver or black  


Linear Power supply that delivers more power and further improves audio quality!  


Linear power supply consists of a big toroidal transformer with shielding between primary and secondary winding which acts as an isolation transformer and avoids penetration of interferences from mains into amplifier. This transformer has a big power reserve, compared to a standard power adaptor. It has very low output impedance and in combination with large filtration capability it can easily manage required power of one stereo amplifier or two mono amplifiers. Advice: To avoid magnetic interference do not stack amplifier and Power Box RS Amp!  


As every amplifier, also digital ones, are sensitive for good quality of energy they are powered with. It is proven by extensive listening tests, that linear power supplies improve the sound of digital amplifiers significantly. This is what all well known high-end manufacturers already realised. Therefore Power Box RS Amp offers a big sound upgrade at an affordable price! 


Please note - Supplied Each ( 2 Off required for Stereo Operation ) 4 Bi-amp , 6 Tri-amp

Pro-Ject  Box-Design - DS Line  Range of Analogue & Digital Components

CD Box DSStream Box DS +




* Prices include VAT, plus delivery
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