Pro-Ject Accu Box S2 Power Supply
Best power upgrade for audiophiles seeking cleaner, more spacious sound quality.
This battery-powered upgrade strips away the harsh electrical noise of your wall outlet to reveal a cleaner, more expansive soundstage. It requires an extra box on your shelf, but the resulting boost in imaging and sonic clarity makes it an essential refinement for any serious analog setup.
$399.00
at
Audio Advisor
Who it's for
- Audiophiles seeking a lower noise floor and improved musical detail
- Listeners demanding consistent sonic performance without voltage fluctuations
- Pro-Ject owners wanting a cohesive and visually integrated audio stack
Who should skip it
- Casual listeners prioritizing budget over incremental performance gains
- Users preferring a set-and-forget power solution without maintenance
- Owners of non-Pro-Ject gear requiring universal power compatibility
Performance breakdown
Noise Floor Reduction
Battery power effectively eliminates AC line interference for a blacker background.
Soundstage Clarity
Noticeable improvements in imaging and spatial separation for high-end phono setups.
Build Integrity
Robust aluminum casework provides excellent shielding and a premium tactile feel.
Power Versatility
Dual outputs accommodate both sensitive phono stages and digital USB devices.
Operational Convenience
Three-hour charging cycle requires planning to ensure uninterrupted listening sessions.
Safety Circuitry
Integrated protection systems ensure long-term reliability for the internal battery cells.
Key Specs
Output voltage
1x 18V/1A (2.5mm), 1x 5V/1A (USB A)
Battery capacity
2600mAh
Charging time
3 hours (outputs disabled)
External battery charger output
21V
Dimensions
4.0" x 1.4" x 4.2"
Weight
1.2 lbs
Chassis material
Aluminum/Metal
Power source
Battery Powered
Protection features
Overcharge protection, Over-discharge protection, Over-current protection
Mounting type
Desktop Stand
Know before you buy
Still have a question?
Ask Metto anything about the Pro-Ject Accu Box S2 Power Supply before you decide.