Pro-Ject Audio Systems Stream Box S2 Ultra network bridge Specifications

Sidebar 1: Specifications

Description: High-resolution, multi-room (up to 6 devices) network bridge controllable via Pro-Ject Play iOS app, Web browser, Roon. Input ports: 2 USB A, Micro USB B (PC-Detox), Network (Ethernet, WiFi), Bluetooth. Outputs: Audio-optimized USB A, HDMI (video). Audio formats supported: PCM up to 32-bit/352.8kHz, DSD256. Internet Radio: Shoutcast. Streaming Services: Spotify, Tidal. Supported data protocols: DLNA, RAAT, Shairport. Outboard power supply (included): 18V/1A DC.
Dimensions: 4.1" (103mm) W by 1.4" (36mm) H by 4.1" (103mm) D. Weight: 0.83 lb (375gm) without power supply.
Finishes: Silver, Black.
Serial number of unit reviewed: 18A032110. System software: v.1.029. Firmware: v.1.15. Hardware revision: 6.
Price: $849. Approximate number of dealers: 300. Warranty: 1 year, parts & labor.
Manufacturer: Pro-Ject Audio Systems, Audio Tuning Vertriebs GmbH, Wirtschaftspark A5, Analogweg 1, 2130 Mistelbach, Austria. Tel: (43) 1-544-858-0400. Web: US distributor: Sumiko Audio, 6655 Wedgwood Road N., Suite 115, Maple Grove, MN 55311-2814. Tel: (510) 843-4500. Web:,

Pro-Ject Audio Systems, Audio Tuning Vertriebs GmbH
US distributor: Sumiko Audio
6655 Wedgwood Road N., Suite 115
Maple Grove, MN 55311-2814
(510) 843-4500

helomech's picture

I've been very pleased with the Pre Box S2 Digital. I also own the DAC Box S FL, a non-oversampling, filterless DAC that retails for $299. I'm very impressed with this unit as well. It produces the organic flavor that's often associated with such designs. I think it also deserves a review, as I know of no other reputable brand offering this style of DAC for such an affordable price.

I'm beginning to think Pro-Ject's best talent is realized through digital products rather than analog.

filmfresser's picture

Pro-Ject has a number of excellent affordable phono stages, streamers, and DACs that need more attention. Their new flagship CD transport is a tad expensive but has some interesting industrial design features that make me want to try it.

JennMartin's picture

Hi John and everyone,
I'm a rookie in the streaming area, just dipping my toe in the water. I've been into high end audio for decades, but I'm brand new in this area.
Do I have this right? My internet modem and wi-fi router are in another room than my listening room. With this box and a DAC connected to my integrated amp, I can get into streaming Tidal, etc. This is all that I need to get started, yes? My wi-fi signal is very strong to the listening room. I can get a router installed in the room and go wired, but I'd rather avoid that if I can. Thanks for any info.
And John, if you find yourself out my way to visit Jon or whatever, let's get together for a meal, or better yet, let's jam! :-) Jenn

funambulistic's picture

That is the easiest way I know get a multi function streamer for computer files, Tidal, Quboz, etc. It has a fantastic interface sounds great too!

JennMartin's picture

Looks good. No wi-fi though.

funambulistic's picture

Gigabit Ethernet RJ45
Wi-Fi 5 (802.11ac, dual-band)

That is how mine is set up. "Look Ma, no wires!"

JennMartin's picture


Bill Milligan's picture

I bought a Pre-Box S2 Digital a while back and enjoyed it, but I felt an upgraded power supply (ifi) might help...As soon as I plugged in the new one, the soundstage dramatically opened up as did resolution. I bought the ~$50 one and am thinking of upgrading to their newer for $100...BIG DIFFERENCE!