Accu Box S2 USB delivers clean, steady power to any product with a 5V USB power requirement. It does so by separating the PSU from the polluted mains, eliminating mains-born interference that could otherwise have a negative impact on sonics. This results in a more clear and spacious sonic presentation. The 2600mAh capacity provides hours of uninterrupted enjoyment from the Li-Pol batteries. Front LEDs indicate when the unit needs charging and/or is powering other gear. The aluminium/steel enclosure is sleek-looking and provides additional isolation of critical componentry from interference.

Additional information
Weight 0.42 kg
Dimensions 10.6 × 10.3 × 3.7 cm



  • Superlative audiophile power transmission
  • Li-Ion Accu driven power supply
  • No disturbing interferences through mains
  • Perfect for all S2 DACs
  • 1 x 5V USB A output
  • 2600 mAh capacity
  • LED indication for charging and mains
  • Full aluminium/metal casework
  • Available in black or silver
  • Handmade in Europe


  • Output voltage / current: 1x 5V/1A (USB A)
  • Capacity: 2600 mAh (Li-Ion batteries)
  • Charging time: 3 hours (outputs disabled)
  • External battery charger: 8.4 V output