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The Stream Box S2 Ultra from Pro-Ject is the perfect tool to bring your traditional hi-fi system into the future. Connect the Stream Box S2 Ultra to your system via USB to enjoy all the quality and convenience of high-resolution audio streaming without needing to update the rest of your gear.
The Pro-Ject S2 series of hi-fi components combines impressive build-quality and stunning sound with revolutionary design to offer a range of amplifiers, phono stages and sources that you can hold in one hand. By challenging conventional hi-fi wisdom, Pro-Ject have created a series of modular components that you can mix and match for your perfect system, all with a footprint that's a fraction of old-fashioned hi-fi. Pro-Ject stay true to that formula with the with the Stream Box S2 Ultra, which will bridge the gap between your modern music network and your traditional hi-fi system.
A Streamer For The Modern Era: Add high-resolution streaming to your traditional hi-fi instantly with the Stream Box S2 Ultra. Simply plug into your USB DAC (or amplifier, or pre-amplifier) and listen to music using Spotify, Tidal, Roon, AirPlay, DLNA and local network drives within minutes!
Roon Ready And Raring Go: The Stream Box S2 Ultra uses Roon's own RAAT technology, so you can connect it to a traditional USB DAC (or amplifier, or pre-amplifier) to create a Roon Ready endpoint, and bring even more gear into your whole-home audio system.
Stream Just About Anything Your Heart Desires: Got a mighty digital library at home? The Stream Box S2 Ultra can also handle music from USB hard drives, NAS drives and your PC's library; connect to the Micro-USB In, and it'll even clean up USB noise from your PC in the process, giving your collection an extra clarity you never knew you could have. No need to worry about file compatibility, either — the Stream Box S2 Ultra supports almost any file type that your DAC does, even very high-resolution file types like 352.8kHz PCM and DSD256. If your DAC is MQA-enabled, the Stream Box S2 Ultra can pass-through MQA signals without alteration, for exact unfolding by your DAC.
Under The Hood: In developing the Stream Box S2 Ultra, its designer John Westlake (also the mastermind behind Pro-Ject's Pre Box S2 Digital) decided that it must do three critical things; Provide bit-perfect HiRes (no data manipulation), support DSD files and allow the DAC to be Audio Clock master. The Stream Box does these things easily with its quad core Raspberry Pi 3 and Volumio software.
The Raspberry Pi 3 is an effective bit of hardware, but it was designed to be cheap rather than for sound quality. Those design choices mean there's far more noise, especially from the power supply, than would be suitable in a high-resolution streamer. Yet Pro-Ject have it all under control. The high-calibre design of the Stream Box S2 Ultra removed jitter, RF and ground noise through a host of clock improvements, low-noise power supplies, and the capacity for the 5V USB power output to be disabled where not required.
Pro-Ject Stream Box S2 Ultra Review
"Is there anything it can't do? In every combination I tried, the S2 Ultra' pass-through USB 'cleaner' revealed more detail in the sound, and greater weight and definition in the bass." Andrew Everard & Paul Miller, Hi-Fi News
Main Features & Specifications
- Design: High-Resolution Network Bridge
- Roon Ready (RAAT)
- Stream Spotify and Tidal, as well as internet radio via Shoutcast
- AirPlay streaming via Shairport
- DLNA enabled
- Micro-USB In to filter USB noise from PC
- Control via smartphone app, web browser or touchscreen display
- Ethernet and WiFi connectivity
- Supported audio formats: PCM 32bit/352.8kHz, DSD256
- Streaming services: Tidal, Spotify
- Supported data protocols: RAAT (Roon Ready), Shairport and (AirPlay), DLNA
- Multi-room: Up to six devices
- Internet radio: Shoutcast
- Inputs: 2x USB-A, Micro USB B, Network (Ethernet/WiFi)
- Outputs: Audio-optimised USB-A, HDMI (video only)
- Controllable via: Smartphone app, web browser, Roon
- Available Finishes: Silver or Black
- Dimensions (WxHxD): 105 x 37 x 105 mm
- Weight: 375g (excl. power supply)
- Manufacturer's Warranty: 2 Years
Note: Features & Specifications Subject To Change Without Notice. E&OE.