Pro-Ject Pre Box S3 All-In-One Control Centre

Pre Box S3 All-In-One Control Centre, by Pro-Ject Audio Systems.

The Pre Box S3 is crafted to bring premium audio performance into a sleek, space‑saving enclosure. Its aluminium S3 chassis offers excellent shielding and durability, ensuring clean signal paths and long‑term reliability.

Available in silver or black, it blends effortlessly into any modern hi‑fi setup, delivering both refined aesthetics and outstanding engineering in equal measure. Designed and manufactured in Europe, it reflects meticulous attention to detail and a commitment to quality craftsmanship.

Premium Analogue

At its heart, the Pre Box S3 features a dedicated moving‑magnet phono stage engineered for low noise, high gain, and exceptional linearity. This design allows your vinyl records to retain their natural tonality and dynamic presence.

The motor‑driven analogue volume control provides precise adjustment while preserving signal purity, ensuring that every listening session is both engaging and accurate. Its dual‑mono circuitry further enhances stereo imaging and channel separation for an authentic high‑fidelity experience.

High-Res Digital

Digital sources are handled with finesse thanks to the Cirrus Logic CS4344 24‑bit/192 kHz DAC, delivering clean, detailed, and articulate sound across all supported inputs.

Bluetooth 5.0 with aptX HD enables high‑quality wireless streaming up to 24‑bit/48 kHz, making it easy to enjoy near‑lossless audio from smartphones, tablets, or computers.

Whether you're using physical media or streaming wirelessly, the Pre Box S3 maintains an impressive standard of clarity and precision.

Comprehensive Connectivity

Designed as a true all‑in‑one hub, the Pre Box S3 offers 13 versatile in‑ and outputs to accommodate turntables, TVs, streaming sources, and more.

Its eARC input allows seamless connection to modern televisions, while coaxial and optical S/PDIF inputs support digital audio at up to 24‑bit/192 kHz.

Flexible output options include variable RCA to feed power amplifiers or active speakers, a fixed line‑level output for secondary zones or headphone amps, and a dedicated subwoofer output.

With RS232 and trigger connections, it integrates flawlessly into smart home and custom installation environments, completing a highly capable and future‑ready system.

Features

• NEW 13 total Input / Output connections
• NEW eARC input for TV
• NEW Custom integration ready: Trigger and RS232
• NEW Perfect control unit for active speakers & power amps
• 9 inputs! 3 x analogue + 6 x digital
• High-quality low noise and high gain (45 dB) MM phono input
• 3 x S/PDIF + async, USB C inputs - up to 24-bit / 192 kHz
• 2 x analogue RCA line-inputs
• Cirrus Logic CS4344 24-bit / 192 kHz Multi-bit Delta Sigma
• Bluetooth 5.0 - aptX HD capable (24-bit, up to 48 kHz)
• Dual mono design principle
• Analogue volume control with motor driven potentiometer
• 6.3 mm jack headphone output
• Variable + fixed line outputs
• Subwoofer output
• Remote control included
• Premium S3 aluminium case protects against interference
• Available in silver or black
• Made in Europe

Specifications

• Frequency Response (20 Hz - 20 kHz): < 0.4 dB
• Line Preamp Gain: 4.5 dB
• Phono Preamp Gain: 45 dB
• Channel Separation: -72 dB @ 10 kHz
• SNR: 110 dB (120 dB A-weighted)
• THD: < 0.007 %
• Headphone Amplifier: 2 x 70 mW @ 32 Ω (1 % THD)
• Headphone Output: 6.3 mm jack (16 – 600 Ω)
• Analogue Inputs: 2 x pair RCA, 1 x phono MM (RCA)
• Digital Inputs: RCA coaxial, 2 x Toslink, Bluetooth, async, USB C, eARC
• Bluetooth: 5.0, aptX, aptX HD, A2DP profile
• DAC: Cirrus Logic CS4344 24-bit / 192 kHz
• Outputs: 1 x variable RCA, 1 x fixed 3.5 mm jack, 1 x sub RCA
• Trigger Output: 12 V DC, 2-pole coaxial 2.5 mm jack
• Power Supply: 18 V / 500 mA DC, 100 - 240 V, 50 / 60 Hz
• RS232: Pluggable 3-PIN terminal block
• Standby Power Consumption: < 0.5 W
• Dimensions (W x H x D): 206 x 55 x 153 (176 mm with sockets)
• Weight: 1020 g without power supply

Included

• 1 x Pre Box S3, in selected finish
• 1 x Remote Control
• 1 x Power Supply
• 1 x Documentation

More Information

• Pre Box S3, by Pro-Ject Audio Systems