Pro-Ject Power Box S3 Phono Power Supply - Silver

Pro-Ject Power Box S3 Phono Power Supply – Silver

Cleaner Power, Better Vinyl Performance

The Pro-Ject Audio Systems Power Box S3 Phono is a dedicated external power supply designed to improve the performance of your turntable and phono preamp by delivering cleaner, more stable power. Built for vinyl enthusiasts who want to get the most from their analogue setup, this compact upgrade helps reduce unwanted electrical noise and interference that can affect playback quality.

Unlike standard power adapters, the Power Box S3 Phono moves the power supply outside of your main hi-fi components, helping to minimise signal contamination and improve overall sonic clarity. The result is a cleaner background, better detail retrieval, and a more refined listening experience.

Dual Power Outputs for a Tidier Setup

Designed as an all-in-one power solution for compatible Pro-Ject Audio Systems turntables and phono stages, the Power Box S3 Phono features two dedicated outputs, allowing you to power both devices from a single unit. This not only improves cable management but also reduces clutter around your audio system.

Its advanced DC filtration and linear voltage regulation work together to provide a consistent, low-noise power supply, helping your equipment perform at its best.

Engineered for Stable, Low-Noise Performance

Built with high-quality low ESR capacitors and precision voltage regulation, the Power Box S3 Phono is designed to deliver stable power with minimal noise. This helps preserve delicate audio signals and can contribute to improved dynamics, better separation, and cleaner overall sound reproduction.

The rigid aluminium housing also provides effective shielding against external interference, helping maintain signal integrity in demanding audio environments.

Designed to Match Your Hi-Fi System

Compact, solidly built, and finished in a sleek silver aluminium chassis, the Power Box S3 Phono fits neatly into any modern hi-fi setup. Designed and manufactured in Europe, it reflects Pro-Ject’s focus on quality engineering, practical design, and long-term reliability.

Whether you're upgrading your vinyl system or simplifying your setup, the Power Box S3 Phono offers a straightforward way to improve both performance and organisation.

Key Features

• External power supply for compatible turntables and phono preamps
• Dual outputs for powering two devices from one unit
• Clean, stable power delivery for improved audio performance
• Advanced DC filtration helps reduce electrical noise
• Linear voltage regulation for consistent performance
• Low ESR capacitors for improved power efficiency
• Aluminium casing shields against interference
• Cleaner cable management with fewer power adapters
• Compatible with all 18V Pro-Ject Phono Boxes
• Compatible with most 15V DC Pro-Ject turntables
• Available in black or silver
• Handmade in Europe

Box Contents

• Power Box S3 Phono
• Power supply
• 42cm power cable for turntable and phono preamp
• User manual

Important Compatibility Note:
Not suitable for Pro-Ject X8, Xtension 9, Xtension 10, Xtension 12, RPM 9, RPM 10, Signature 10, and Signature 12 turntables. For these models, Pro-Ject recommends the Pro-Ject Power Box RS2 Phono or Pro-Ject Power Box RS Uni TT.

Technical Specifications

General

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