Pro-Ject Uni Box S3 Amp Packs WiiM Streaming Smarts

Pro-Ject’s Uni Box S3 is a premium all-in-one streaming amplifier that effortlessly blends analogue fidelity with cutting-edge WiiM streaming smarts. Building on WiiM’s rock-solid reputation for affordability and feature-rich performance, this compact unit integrates the award-winning analogue design from Pro-Ject’s MaiA S3 with powerful digital streaming capabilities. By leveraging the user-friendly WiiM OS, the Uni Box S3 offers seamless access to popular platforms such as Spotify Connect, Tidal Connect, Amazon Music, and more—making it a modern audiophile’s dream. The inclusion of Bluetooth 5.1 and Wi-Fi ensures wireless versatility, while the new Pro-Ject Home app mirrors the intuitive WiiM experience for effortless control.

At the heart of the Uni Box S3 lies a fully analogue signal path, ensuring that any analogue source stays untouched by unnecessary digital processing. This commitment to authentic sound reproduction means Pro-Ject’s new amp retains the warmth and clarity purists crave. Its dual-mono design delivers 40W per channel into 4 ohms, with a Cirrus Logic CS4344 DAC supporting up to 24-bit/192kHz playback. With eight versatile inputs—including HDMI eARC, MM phono, optical and coaxial digital, RCA, and a subwoofer output—this streaming amplifier caters to both vinyl lovers and modern streamers alike. A high-quality headphone output (6.3mm) rated at 70mW (32ohm, 1% THD) further broadens its appeal.

Packaged in a sleek aluminum chassis available in black or silver, the Uni Box S3 is a showcase of European craftsmanship with long-term value built in—designed to function even if streaming standards evolve. At £699 / $1,099 / €799, it’s positioned above the WiiM Amp Pro, but well-justified given the analogue pedigree. Whether you’re new to high-fidelity audio or a seasoned enthusiast, this unit opens up a world of streaming convenience without sacrificing sonic integrity. Discover more details on supported music services and connectivity features via the latest guide to music streaming platforms. If you’re looking for true hi-fi performance matched with sophisticated WiiM streaming smarts, the Uni Box S3 deserves a spot on your shortlist.