Pro-Ject
Pro-Ject Power Box S3 Phono
Best power upgrade for vinyl enthusiasts seeking cleaner, more stable sound.
Elevate your turntable setup with the Pro-Ject Power Box S3 Phono, a dedicated power filter designed to enhance audio clarity. This unit isolates your turntable and phono preamp from power supply noise, delivering ultra-stable, clean power for improved sound quality. It features tailored 15V and 18V outputs, boosting speed stability and reducing the noise floor. Replace multiple adapters with this single, efficient solution housed in a protective metal enclosure, streamlining your system for a superior listening experience.
$249.00
Owner Satisfaction
4.6
/ 5
Category Rank
681
/ 1637
#681 in Turntable Accessories
Price vs Category Average
-80%
Below average
Input power supply
181000
/ V / mA
Who it's for
- Audiophiles seeking a lower noise floor and greater musical detail
- Minimalists wanting to consolidate power for their analog setup
- Vinyl listeners prioritizing precise speed stability and pitch accuracy
Who should skip it
- Budget-conscious buyers satisfied with standard power supply performance
- Owners of non-Pro-Ject gear requiring broader component compatibility
- Users with limited shelf space or complex cable management needs
Performance breakdown
Noise Floor Reduction
Effectively strips away electrical interference for a noticeably blacker background.
Speed Stability
Consistent voltage delivery ensures pitch-perfect playback for your vinyl collection.
Build Quality
Robust metal chassis provides excellent shielding against external electromagnetic interference.
System Integration
Streamlines your setup by replacing multiple wall warts with one unit.
Output Versatility
Dedicated 15V and 18V rails cover most Pro-Ject turntable and preamp needs.
Power Cleanliness
Linear regulation provides the stable, ripple-free current high-end audio components demand.
Key Specs
Input power supply
18V / 1000mA
Output voltage 1
15V ±0.5% ripple
Output voltage 2
18V ±0.5% ripple
Combined maximum output current
1000mA
Dimensions
103 x 37 x 106mm (WxHxD)
Weight
370g (0.82 lbs) without power supply
Material
Metal enclosure
DC filtration for noise reduction
Features
- Provides ultra-stable, clean power
- Low-noise power output
- Linear voltage regulation
- Metal enclosure blocks interference
- Manages cable clutter
- Improves speed stability
- Reduces noise floor
- Dedicated 15V and 18V outputs
What customers say
The Power Box S3 Phono is a highly valued upgrade for serious vinyl enthusiasts. Users consistently report a significant improvement in sound quality, noting a dramatic reduction in background noise and hum. This leads to a noticeably blacker background and enhanced detail retrieval. Many find its performance exceeds expectations for the price, making it an excellent value. The unit's compact and robust design ensures it integrates smoothly into any setup. It offers reliable performance, providing substantial sonic benefits that elevate the listening experience.
Know before you buy
It replaces standard wall-wart power supplies with a linear power source that filters out electrical noise. By providing cleaner, more stable voltage, it lowers the noise floor and helps your turntable maintain more consistent speed stability.
Yes, the Power Box S3 Phono features dedicated 15V and 18V outputs designed specifically to power one compatible Pro-Ject turntable and one compatible Pro-Ject phono preamp simultaneously.
It is specifically engineered for Pro-Ject components that utilize 15V DC for turntables and 18V for phono preamps. It is not a universal power supply, so you should verify your specific model's voltage requirements before connecting.
Yes, the rigid metal housing is essential for shielding the internal electronics from electromagnetic interference. This physical barrier helps ensure that external noise doesn't bleed into your sensitive audio signal path.
The unit is quite compact, measuring 103 x 37 x 106mm. It is designed to match the footprint of other Pro-Ject S-series components, making it easy to stack or tuck away neatly.
Still have a question?
Ask Hayley anything about this product before you decide.