For the very first time, Pro-Ject is using a dual mono configuration with the highest class D/A converters of ESS Sabre. Their flagship DAC-chip ensures the highest class audio in a small and affordable package. This DAC is capable of high-resolution audio up to 32bit/768kHz PCM and DSD512! Pre Box S2 Digital is also the very first of our devices to support hardware MQA unfolding. With organic polymer capacitors and thin-film miniMELF resistors Pro-Ject was able to create a tiny device that will blow away even much bigger components for a much higher price. With a total of eight digital filters, the sound can be shaped precisely to the listener's liking.

Stream Box S2 Ultra closes the gap, it offers modern connectivity with its network inputs and USB A output. This USB output is perfected for audio signals, it uses a dedicated internal power supply and only top audiophile-grade components. You won‘t run into file-support issues, as Stream Box S2 Ultra acts as a network bridge, bypassing the files directly to your digital to analog converter. Since most DACs only have one USB input, we have designed Stream Box S2 Ultra also to be a USB detox device. Simply connect your PC to the micro USB input of the unit and connect our DAC to the audio output. This way you can clean the noisy signal of your PC, while enjoying your music with it. Our new remote control iOS and Android App is based on an opensource project and has a large community behind it. This guarantees full support and future improvements.

• Selected components
• Dual mono construction
• MQA hardware decoding
• DSD64, DSD128, DSD256 & DSD512 (DoP, DSD512 native)
• Up to 24bit/192kHz for optical & coax inputs
• 7 selectable digital filter characteristics
• 1 proprietary optimum transient digital filter
• Synchronization of all internal oscillators
• Jitter as low as 100 Femtoseconds!
• Audio optimized USB A output
• TIDAL, Spotify, Quobuz, Roon, Internet Radio (TuneIn)
• Controllable via App and PC/Laptop
• Multi-room enabled
• Bluetooth + Sharepoint
• Cleans up the audio signal from a PC
• HDMI video output
• Ethernet and WiFi connectivity