Pro-Ject Uni Box S3 Integrated Streaming Amplifier

Description

Pro-Ject Uni Box S3 Integrated Streaming Amplifier

The Pro-Ject Uni Box S3 Integrated Streaming Amplifier dares to break away from the norm, redefining what a modern streaming amplifier can be.

While many amplifiers are dominated by deeply integrated streaming tech – compromising their core design – the Uni Box S3 takes a different path.

FAQ’s

1. Is the Pro-Ject Uni Box S3 good for a minimalist Hi-Fi system?
   The Pro-Ject Uni Box S3 Integrated Streaming Amplifier combines streaming, DAC functionality, and stereo amplification in one compact component. This makes it ideal for listeners who want a high-quality system with minimal equipment.
2. Can the Pro-Ject Uni Box S3 power floorstanding speakers?
   The Pro-Ject Uni Box S3 provides around 40W per channel, which is suitable for many efficient bookshelf and smaller floorstanding speakers in small to medium sized rooms.
3. Does the Pro-Ject Uni Box S3 support Spotify Connect?
   The Pro-Ject Uni Box S3 Integrated Streaming Amplifier supports modern network streaming including Spotify Connect, allowing you to stream music directly from the Spotify app.
4. Is the Pro-Ject Uni Box S3 better than a traditional amplifier?
   For many listeners, yes. The Pro-Ject Uni Box S3 combines streaming, amplification, and digital connectivity in one device, eliminating the need for separate streamers and DACs while maintaining excellent sound quality.
5. What makes the Pro-Ject Uni Box S3 different from other streaming amplifiers?
   The Pro-Ject Uni Box S3 focuses on compact design, audiophile sound quality, and simple operation, making it ideal for modern stereo systems where space and simplicity matter.

Features

• App controlled
• Designed & built in Europe
• Moving Magnet phono stage

Ideal for:

• Modern minimalist Hi-Fi systems
• Apartment or office listening spaces
• Streaming-focused music setups

Compact All-in-One Hi-Fi Hub

Stream music, power your speakers, and connect digital sources from a single elegant component.

The Master of Analogue & Digital

The Uni Box S3 masterfully bridges the worlds of analogue and streaming.

Your analogue sources – like turntables – are not digitized, preserving their rich and lifelike sonic character. With a fully analogue pre- & and power amp design, every nuance of your music is delivered with breathtaking punch and dynamic precision.

At Pro-Ject Audio Systems, their mastery of analogue hardware design allows them to craft an astonishingly powerful amplifier within the sleek, compact aluminum case of the Uni Box S3. All this power remains usable entirely without a mobile app or the need to constantly update software.

Market leading streaming

Partnering with WiiM, the Uni Box S3 streaming technology is powered by the industry leading WiiM OS™. The Cirrus Logic CS4344 DAC offers a high quality resolution of up to 24bit and 192kHz.

With the Pro-Ject Home app you control the streaming options on input 8 – the streaming input. Setting up the WiFi connection is a breeze. Just open the app and it automatically detects your new Uni Box S3 and walks you through the setup process. Comfortably reset the WiFi connection via long press of the Stream button on the front panel.

The Uni Box S3 even allows you to stream any of your connected devices – turntable, CD player or even TV – to other compatible streamers*.

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

Speaker Pairing Suggestions

The Pro-Ject Uni Box S3 pairs beautifully with compact bookshelf speakers such as the TRIANGLE Borea BR02 Connect Bookshelf Speakers, ELAC Debut 3.0 DB53 Bookshelf Speakers, and Mission LX-1 MKII Standmount/Surround Speakers creating a refined yet compact stereo system.

Specifications

• Power output: 2x 23W / 40W at 8 / 4ohms (1% THD)
• Frequency response (20Hz – 20kHz): < 0,4 – 0,9dB @4ohms
• Channel separation: – 67dB at 10kHz
• Signal to noise ratio: 94dB (9dB-‚A‘ weighted) @4ohm
• THD: < 0,05% at 10W / 4 ohms
• Headphone amplifier: 70mW at 32ohm (1%THD)
• Analogue inputs: 2x pair RCA, 1x phono MM (RCA)
• Digital inputs: RCA coax, 2 x Toslink, eARC, WiFi/BT
• Power amplifier: Texas Instruments TPA3221DDV
• DA-converter: Cirrus Logic CS4344 24bit/192kHz
• Variable output: 1x pair RCA
• Speaker connectors: 4mm Ø banana plugs, spades connectors or naked wire
• Wireless connectivity: Wi-Fi 5, 802.11 b/g/n/ac 2.4 G and 5G dual bands, Bluetooth 5.1, SBC and AAC
• Power supply: 20V/3A DC; 100 – 240V, 50/60Hz
• Standby Power consumption: < 0,5 watts
• Dimensions WxHxD: 206x55x153 (176mm with sockets)
• Weight: 1100 g without power supply