Pro-ject Uni Box S3 streaming amplifier
Pro-ject Audio Systems has launched the Uni Box S3, an integrated amplifier with streaming technology powered by Wiim OS. Drawing on decades of expertise in analogue design, Pro-ject has taken a different approach to typical streaming amplifiers; one that preserves the rich character of analogue sound by keeping the analogue signal path intact, while embracing the convenience of app-controlled streaming.
Analogue design principles
Where many streaming amplifiers convert all signals to digital, the Uni Box S3 keeps analogue sources analogue. That means your turntable, CD player or other line-level devices retain their original, lifelike sonic character. Built around the same dual-mono architecture as Pro-ject’s acclaimed MaiA S3, the Uni Box S3 delivers 40 watts per channel into 4 ohms, offering remarkable sonic muscle from a minimal footprint.
Wiim OS streaming platform
The backbone of the Uni Box S3’s streaming smarts is handled by Wiim OS, which includes support for Spotify Connect, TIDAL Connect, Qobuz, TuneIn, and more. A Cirrus Logic DAC handles playback up to 24-bit/192kHz.
New Pro-ject Home app and multi-room capabilities
Control comes via the new Pro-ject Home app, which makes setup straightforward, supports multi-room playback with other future Pro-ject devices, and even lets you stream connected analogue sources – like a turntable – to compatible devices elsewhere in your home.
Extensive features and connectivity
The Uni Box S3 includes a moving magnet phono stage, analogue volume control via a motorised potentiometer, and a dedicated headphone amp with a full-size 6.3mm output. Inputs cover three analogue (including phono), three digital (optical and coaxial), HDMI eARC for TV audio, and wireless via Wi-Fi and Bluetooth 5.1. Outputs include gold-plated speaker terminals and a variable RCA output for subwoofers or second zones.
Sustainability and longevity
Not only does the Uni Box S3 preserve the rich, lifelike character of analogue sound, but it is also designed with sustainability in mind. Its compact design uses significantly less aluminium than conventional amplifiers, reducing material use and enabling more efficient transport. And by separating the analogue amplifier from the streaming module, the Uni Box S3 ensures that even if streaming technology evolves or becomes obsolete, the amplifier will continue to perform as a high-quality analogue system.
The Pro-ject Uni Box S3, housed in its aluminium chassis, is built in Europe and available now in silver or black. Pricing is £699 and €799. Henley Audio exclusively distributes Pro-ject in the UK.