I wanted to use this with a computer and traditional amplifier and speakers, but also thought it would be nice to allow steaming from my phone or tablet too, since I did not have that arranged in my office system.
I connected directly via USB to my Windows 10 PC then into an older stereo amp and speakers. No drivers were needed and it all just worked by selecting it as the output in Windows. I configured my PC to leave the USB power on when shutdown, so I can use it directly from my phone without booting the PC. It also comes with a power supply if you just wanted to use it as a DAC and Bluetooth receiver in your hifi setup.
This product is great for this kind of use. The sound quality is excellent even with Bluetooth. Nice too that, depending on how you stream to the device, the front panel uses colour to show you what the source quality is too.
I liked this enough to add it to my main system for a while and played with a Mac Mini/Tidal/MQA source. It really is an amazingly good sound for something so small and reasonably priced. It also feels very solid and the flick switches add a little touch of class too. Tired it with Bluetooth, USB and COAX and all sounded very fine to me. I think you would be hard pressed to do much better at this price. Just as a test, I also plugged it directly in to my iPad via USB and that also worked surprisingly well too.
In summary, this seems excellent to add a DAC to a PC or Mac, or if you need to stream from a computer or phone with an older conventional hifi amp and speakers.