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Pro-Ject - Power Box RS Amp

Pro Ject

  • $ 69900

Pro-Ject Power Box Amp

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 interference from mains into amplifier. This transformer has a big power reserve, compared to a standard power adaptors. 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 realized


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
Compatible 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


Input voltage: AC 120V/60Hz US version C15 connector
Output voltage: Two outputs by 2 x 48V / 2.5A DC each
Filtration capacity: 40.000 microFarads
Output voltage: Ripple7mV
Power consumption: 600 watts max
Dimensions (W x H x D): 8.11 x 2.84 x 7.88 in
Weight: 10.6 lb

FAQ - Hints for using Power Box RS Amp 

Q: Is there an audible difference between usage of special Connect it Power cables instead of standard ones, when Power Box RS power supplies are used?

A: Yes. Power Box RS Amp is quite sensitive on influence of power cable quality. Try to connect it with ordinary cable and then check it with Connect It Power cable. On high resolution systems with CD Box RS and Pre Box RS digital, the better cable offers better separation of instruments and better localization.

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