Pro-Ject's Pre Box S3: A Comprehensive Hi-Fi Control Center

Pro-Ject's Pre Box S3 integrates multiple audio components into a single, compact unit, offering versatile connectivity and high-quality performance.

Updated Jan 27, 2026
Pro-Ject's Pre Box S3: A Comprehensive Hi-Fi Control Center
Elena Vargas

Elena Vargas

Audio & Home Tech Editor

Covers hi-fi, smart speakers, and sound engineering trends for everyday listeners.

Pro-Ject, renowned for its high-quality turntables, has introduced the Pre Box S3, a versatile stereo pre-amplifier designed to streamline and enhance your audio setup. This compact unit serves as a central hub, unifying various audio sources and providing a seamless listening experience.

Key Features and Specifications:

  • Phono Stage: Equipped with a moving magnet (MM) phono input, the Pre Box S3 ensures accurate and dynamic playback of vinyl records.
  • Digital-to-Analog Converter (DAC): The integrated DAC supports up to 24-bit/192kHz audio, delivering high-resolution sound from digital sources.
  • Analog Preamplifier: Featuring a motor-driven volume control, the analog preamp offers precise and smooth volume adjustments.
  • HDMI eARC Input: The inclusion of an HDMI eARC connector allows for easy integration with modern televisions, enabling high-quality audio transmission.
  • Bluetooth 5.0 with aptX HD: Wireless streaming is facilitated through Bluetooth 5.0, supporting aptX HD for high-quality audio transmission up to 24-bit/48kHz.
  • Headphone Amplifier: Designed to drive headphones with impedances ranging from 16 to 600 ohms, the built-in headphone amplifier caters to a wide range of headphone models.

Connectivity Options:

  • Inputs: Two line-level RCA inputs for external sound sources, one MM phono input, two optical (Toslink) S/PDIF inputs, one coaxial S/PDIF input, one asynchronous USB-C input supporting PCM up to 24-bit/192kHz, and an HDMI eARC input.
  • Outputs: A variable RCA output for connection to a power amplifier, a 6.3mm headphone output, a fixed line-level output for secondary zones or external equipment, a dedicated subwoofer output, a 12V trigger for linked devices, and an RS232 connection for integration into custom or multi-room installations.

Design and Build:

The Pre Box S3 features a minimalist design with an aluminum chassis that protects against interference and ensures durability. It is available in black or silver finishes to complement various audio setups.

Pricing and Availability:

Priced at £499 (approximately $685 / AU$985), the Pro-Ject Pre Box S3 is set to be available in the UK from February 2026 through Pro-Ject's dealer network. For availability in other regions, it's advisable to check with local Pro-Ject distributors.

Conclusion:

The Pro-Ject Pre Box S3 stands out as a comprehensive solution for audiophiles seeking to consolidate their audio components into a single, high-quality unit. Its extensive connectivity options, high-resolution audio support, and versatile design make it a valuable addition to any modern audio system.

Sources:

  • Pro-Ject Pre Box S3 Announcement
  • Pro-Ject Pre Box S3 Product Information
  • Pro-Ject Pre Box S3 Features and Pricing

Pro-Ject Pre Box S3: All-in-One Hi-Fi Control Center

Discover the Pro-Ject Pre Box S3, a versatile stereo pre-amplifier integrating multiple audio components into a single, compact unit for enhanced listening.

Pro-Ject's Pre Box S3 combines multiple audio components into one compact unit, offering versatile connectivity and high-quality performance.

How do you integrate various audio sources in your setup?

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