Power Box RS Uni 1-way TT was designed specifically for Pro-Ject turntables with high-mass record platters and a 15V DC mini XLR input (RPM 9 & 10, Signature 10 & 12 and Xtension 9, 10 & 12). A linear power supply consists of a massive toroidal transformer with shielding between primary and secondary windings, which acts as an isolating transformer and prevents penetration of interference from mains from reaching the audio circuitry. The transformer has a much higher power reserve compared to the standard power adapter, very low output impedance with a large filtration capability. What you hear is improved soundstaging & imaging propelled by silent backgrounds, also making micro-detail more available to your ears.

Keep in mind that Power Box RS Uni 1-way TT is compatible with all 15V DC turntables by Pro-Ject (not only those with high-mass platters listed above). For this reason, two cables are included; mini XLR – mini XLR (above) as well as mini XLR – 2.1mm barrel connector (all other 15V DC ‘tables).

Additional information
Weight 4.8 kg
Dimensions 19.5 × 20.1 × 7.2 cm



  • Specially developed for turntables with heavy platters (RPM, Xtension & Signature Line)
  • Purest & cleanest power using non-switching power supply
  • Connect it RS – TT 15V Mini XLR – 2.1 power cable included
  • Soft-start system avoids current in-rush in primary winding
  • Audio-type toroidal transformer
  • Main isolating transformer with copper foil shielding
  • Secondary voltage rectification with precise regulation
  • High filtration capacity (10.000 µF)
  • Low ESR capacitors
  • Low noise components with surge protection
  • Available in silver or black
  • Handmade in Europe


  • Input voltage: AC 230V/50Hz IEC C15 connector (120V/60Hz US)
  • Output voltage / current: 15V / 3A max. (for all Pro-Ject 15V DC turntables)
  • Filtration capacity: 10.000 µF
  • Output voltage ripple rejection: better than 75 dB