Pro-Ject Stream Box S2 Ultra

  • Sale
  • $989.00
  • Regular price $1,099.00
  • Will not ship until

Australian warranty, Full support, Authorised reseller, Free shipping

Pro-Ject Stream Box S2 Ultra

Audio optimized network bridge and USB detox device

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 Stream Box S2 Ultra has everything you could want ready to go: listen to music using Spotify, Tidal, Roon, DLNA and local network drives in minutes. The Stream Box S2 Ultra also supports AirPlay, and includes internet radio streaming (via Shoutcast).

Manufacturers Details:

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. The Net/PC button also allows for a PC or Server to be directly connected via USB - benefiting from the same USB detox process without the need to send signals over a wireless or wired network.

Engineered With Care:

The Stream Box S2 Ultra also 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.

Key Features:

  • High resolution network bridge
  • Audio optimized USB A output
  • Multi-room enabled
  • Dual USB A input for external storage
  • TIDAL, QOBUZ & Spotify
  • HIGHRESAUDIO Streaming
  • Network-enables any modern DAC with USB input
  • Internet Radio (TuneIn)
  • DLNA enabled
  • Bypasses all audio formats to the DAC
  • Cleans up the audio signal from a PC
  • Fully Roon Ready and certified
  • Shairport
  • Bluetooth
  • CD ripping (requires external USB CD drive)
  • Uses dedicated power supplies
  • HDMI video output
  • Controllable via smart devices and PC/Laptop
  • New control app!
  • Ethernet and WiFi connectivity


Audio Formats PCM 32bit/352.8kHz, DSD256
Internet Radio TuneIn, iHeartRadio
Streaming Services TIDAL, Spotify, Qobuz
Supported data protocols RAAT, Shairport, DLNA
Multi-room Up to six devices

2 x USB A
Micro USB B (PC Detox)
Network (Ethernet, WiFi)

WiFi Standards

802.11 b/g/n/d/e/h/i

Bluetooth Bluetooth Classic + EDR v2.1, v3.0, v4.0 and Low Energy

Audio optimized USB A
HDMI (video)

Controllable via

App, Web Browser, Roon


375 g (without power supply)

Dimensions (WxHxD)

105 x 37 x 105 mm