Power Box DS3 Sources is our best power supply for Pro-Ject DS series components. Keeping the power supply external to the component avoids noise-potential and audio signal contamination. Up to six tailored outputs can run a Pro-Ject turntable and five Pro-Ject source electronics. The linear power supply out-performs switching power supplies by supplying clean energy via a heavy toroidial transformer and sophisticated high-capacity filtration, resulting in highly improved sound quality. In addition to sonic improvements, this upgrade also affords cleaner cable management by reducing the amount of wall-warts needed. Available in black or silver.

Designed & Handmade in Europe

Power Box DS3 Sources is carefully designed and handmade in Europe. We aim to develop a technically flawless device in a housing that is only as big as necessary. Due to the timeless design & rigid aluminum chassis,  it’s built to last an eternity. High-quality materials and componentry in a well-though-out design make this an industry-leader in price-to-performance.

Additional information
Weight 3 kg
Dimensions 8.23 × 8.11 × 7.1 cm



  • Power supply upgrade for up to 6 components
  • Cleanest power using non-switching power supply
  • 6 outputs: 1x for a turntable, 5x for electronics
  • Not suitable for integrated & power amplifiers
  • Soft-start system (no current inrush)
  • Audio-type toroidal transformer
  • Mains-isolating transformer, copper foil shielding
  • Voltage rectification with precise regulation
  • High filtration capacity (10.000µF)
  • Low ESR capacitors
  • Low-noise components with surge protection
  • Rigid aluminum casing protects against interference
  • Available in black or silver
  • Magnetic wooden side panels available separately
  • Made in Europe


  • Input power: 115V/230V AC
  • Output voltage / current (socket diameter): 2 x 9V / 2A max (1.3mm)
  • 3 x 18V / 1A max (2.5mm)
  • 1 x 15V / DC turntable (2.1mm)
  • Filtration capacity: 10.000μF
  • Output voltage ripple: <1mV
  • Trigger output: 2.5mm jack
  • Dimensions (WxHxD): 20.6 x 7.1 x 20.9cm (with sockets)
  • Dimensions (standard): 8.11 x 2.80 x 8.23″
  • Weight: 3kg (6.61 lbs)