Project Accu Box S2 Power Supply

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The Project Accu Box S2 is a high end power supply, working with many Project Box Design products including phono boxes and turntables to supply clean power from a Li-Ion battery.

Creating an incredible synergy with all phono boxes and turntables, the Project Accu Box S2 provides a clean power supply to almost any Box Design product, without mains interference. Powered by five rechargeable Li-Ion batteries with a capacity of 2.6Ah, the Accu Box S2 is able to deliver an audiophile accurate power supply to the connected Box Design product. The batteries are protected with over-charge, over-discharge and over-current features, to prolong the life of the batteries and the product. With a real ground reference, the Project Accu Box S2 works perfectly with turntables, eliminating all possible hum.

With the Project Accu Box S2 connected, the result is a more spacious sound with better separation of the music. Sound is cleaner, creating a more relaxing listening experience. The Accu Box S2 is housed in a full aluminium metal casework, matching the design of other S2 series products, in a silver or black finish. An LED indication light shows if the unit is charging and two outputs are included. One 18V output, and for products such as DACs, a 5V USB-A output is provided. The Accu Box S2 is compatible with any Box Design S2 series, as well as DS2, DS and Phono Box Products. For a full list of recommended products, please see the Product Information sheet.

  • Project Accu Box S2 high end power supply for Box Design, including Phono Boxes
  • Li-Ion battery driven, eliminating mains power interferences
  • Real ground reference for turntables kills any possible hum
  • One 18V and one 5V USB-A outputs for DACs
  • Full aluminium casework in black or silver
  • More spacious sound and improved separation of music
More Information
Product Specifications


1 x 18V (2.5 mm), 1 x 5V/1A (USB A)



Dimensions (W x H x D)

103 x 37 x 106 mm


545 g, without power supply


Your Delivery:

Orders received before 1:00 pm* will be despatched the same day and can be delivered for next working day, (except bank holidays).  For you convenience you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.

30 Day Returns Policy

HiFix is committed to selling quality products which we hope you will love, we do understand, however, that there maybe a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase but should you wish to return anything bought from us, we will be happy to refund or exchange a product within 30 days.

NameSKUQtyLead time
Project Accu Box S2 Power Supply Black456820Warehouse stock usually available in 2 to 3 working days.
Project Accu Box S2 Power Supply Silver456832In Stock for Immediate Dispatch

Warranty information for Project Audio:
Project Audio

Pro-Ject products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a minimum period of 24 months.

For new electronics and turntables (not applicable to accessories) you can extend this guarantee to 36 months, customers must register at: (this offer of an extended warranty must be made within 4 months of date of purchase).

This guarantee applies to all Pro-Ject Products including Turntables and Turntable Accessories.Providing you with peace of mind and the assurance of premium Quality.