Pro-Ject Accu Box S2 High-End Audiophile Power Supply

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Accu Box S2 by Pro-Ject Audio Systems is a high-end, audiophile quality power supply, ideal for use in any serious audio setup.

Accu Box S2 is a clean accu (short for Accumulator Battery) power supply and has an incredible synergy with all Phono Boxes. Using Accu Box S2 results in a more homogeneous and spacious sound with better separation and imaging.

The sound will come across as more cleaned-up overall, giving you a relaxed listening experience with mind-numbing sonics. Accu Box S2 uses five cells or rechargeable Li-Pol batteries with a capacity of 2.6Ah.

For protection of the batteries Accu Box S2 comes with over-charge, over-discharge and over-current protections, to ensure the maximum life-span of the product. Furthermore Accu Box S2 also offers a 5 V USB-A output suitable for other products, such as DACs.


  • Superlative audiophile power transmission.
  • Li-Ion accu driven power supply.
  • No disturbing interferences through mains.
  • Perfect for all phono electronics.
  • 1 x 18 V output.
  • 1 x 5 V USB-A output.
  • LED indication for charging and mains.
  • Full aluminium/metal casework.
  • Available in black or silver.


  • Outputs: 1 x 18 V (2.5 mm), 1 x 5 V / 1 A (USB A)
  • Charger: 21 V
  • Dimensions (WxHxD): 103 x 37 x 106 mm
  • Weight: 545 g, without power supply

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