Pro-Ject Uni Box S3 network amplifier

A versatile, high-quality network amplifier that dares to break the boundaries of the norm and redefines what a modern streaming amplifier can be.

Integrated amplifier with modern streaming. Analog and streaming now done right

The Uni Box S3 dares to break the norm and redefines what a modern streaming amplifier can be. While many amplifiers are dominated by deeply integrated streaming technology – compromising their core architecture – the Uni Box S3 has chosen a different path.

Master of analog and digital

The Uni Box S3 masterfully combines the worlds of analog and streaming. Your analog devices – like turntables – are not digitized, preserving their rich and natural sonic character. Thanks to the fully analog preamplifier and power amplifier, every nuance of your music is conveyed with breathtaking clarity and dynamic precision. Pro-Ject, masters of analog hardware design, has managed to pack an astonishingly powerful amplifier into the sleek and compact aluminum casing of the Uni Box S3. All this power and quality is available completely without a mobile app or constant software updates.

Market-leading streaming

In collaboration with WiiM, the Uni Box S3's streaming technology is based on the industry-leading WiiM OS™. The Cirrus Logic CS4344 DAC offers high-quality resolution up to 24-bit and 192 kHz.

The Pro-Ject Home app lets you control streaming settings on input #8. Setting up your WiFi connection is easy. Simply open the app and it will automatically detect your new Uni Box S3 and guide you through the setup process. Conveniently restore your WiFi connection by long-pressing the Stream button on the front panel.

With the Uni Box S3, you can even stream any of your connected devices – a turntable, CD player or even your TV – to other compatible streaming devices*.

*Compatible with Uni Box S3. Compatible with Stream Box E, Stream Box S3 and Wireless Box E, available later in 2025.

Download the complete product datasheetHERE .

SPECIFICATIONS