Pro-Ject Uni Box S3 Streaming Integrated Amplifier

Product Summary

The Pro-Ject Uni Box S3 is a compact integrated streaming amplifier designed for customers who want a genuine all-in-one hi-fi system without giving up proper analogue design. Rather than being just another app-led streaming box, it combines Pro-Ject’s analogue amplifier know-how with modern network audio features in one neat component.

A big part of the appeal is the way it bridges traditional hi-fi and modern streaming. The Uni Box S3 keeps analogue sources such as turntables in the analogue domain, while also adding WiiM-powered streaming, Bluetooth, Wi-Fi and digital inputs for TVs and other source devices. That makes it a strong option for customers who want one compact unit that can handle vinyl, streaming and TV sound without feeling like a compromise.

It is also designed to be practical in everyday use. With a built-in MM phono stage, headphone output, remote control and the ability to stream connected sources to other compatible Pro-Ject streamers, the Uni Box S3 offers a lot of flexibility for its size. For customers wanting a compact amplifier with modern streaming convenience and real hi-fi credibility, the Uni Box S3 is an excellent choice.

Key Benefits

• All-in-one design combines integrated amplification and modern streaming in one compact unit
• Fully analogue pre and power amp design helps preserve the character of analogue sources such as turntables
• Built-in MM phono stage makes it easy to connect a turntable without needing an extra box
• WiiM-powered streaming opens up access to major music services and multi-room options
• Bluetooth, Wi-Fi, coaxial, optical and eARC inputs make it easy to connect TVs, streamers and other digital sources
• Can stream connected devices such as turntables, CD players and TVs to other compatible Pro-Ject streamers
• Headphone output adds simple private listening without needing a separate headphone amplifier
• Compact aluminium casework keeps the system neat while still feeling like a proper hi-fi component
• 2 years manufacturers warranty, extended to 3 years if registered with Pro-Ject within 4 months of purchase

Technical Specifications

Amplifier & Streaming Details

• Product Type: Integrated streaming amplifier
• Power Output: 2 x 23 W into 8 ohms / 2 x 40 W into 4 ohms (1% THD)
• Amplifier Design: Fully analogue pre and power amplifier, dual mono design principle
• Headphone Output: 70 mW at 32 ohms (1% THD)
• Analogue Inputs: 2 x pair RCA, 1 x phono MM (RCA)
• Digital Inputs: RCA coaxial, 2 x Toslink, eARC, Wi-Fi / Bluetooth streaming input
• DAC: Cirrus Logic CS4344, 24-bit / 192 kHz
• Power Amplifier Stage: Texas Instruments TPA3221DDV
• Variable Output: 1 x pair RCA
• Speaker Connections: 4 mm banana plugs, spades or bare wire
• Wireless Connectivity: Wi-Fi 5, 802.11 b/g/n/ac dual band 2.4 GHz and 5 GHz, Bluetooth 5.0, SBC, AAC
• Streaming Platform: WiiM OS
• Streaming Services: Spotify, TIDAL, Amazon Music, Qobuz, Napster, Pandora, TuneIn, Deezer and more
• Extra Features: Multi-room streaming, EQ functions, remote control, analogue volume control with motorised potentiometer
• Power Supply: 20 V / 3 A DC, 100 - 240 V, 50 / 60 Hz
• Standby Power Consumption: Less than 0.5 W
• Colour Options: Black or silver
• Made In: Europe

Weight & Dimensions

• Dimensions: 20.6 x 5.5 x 15.3 cm (W x H x D)
• Weight: 1.1 kg without power supply

What’s in the Box

• Pro-Ject Uni Box S3 integrated streaming amplifier
• Remote control
• Power supply
• Product documentation