Hi, after reading so much about RPI USB output in this section I thought let’s try if that works on my Onkyo P3000R also. This pre-amp has build in separate TI Burr-Brown 192kHz/32-Bit Dacs (PCM 1975) for L/R channels. Also Asynchronous USB input enables playback of high-resolution audio files from computers, special drivers required. I have 3 RPI’s with Allo en HifiBerry hats in use, so I ordered another RPI 3B + installed it with Ropieee, no hat, plugged the USB cable in switched the P3000R on and the Onkyo showed up in Roon. Ofcourse you can only control the volume on the Onkyo, it has a remote control so that’s no problem. It took me 5 years to find out thanks to the USB/Ropieee threads, THANK YOU.
A cheap solution and it sounds very OK to me compared to the Allo Boss version 1.2 and even to my Auralic Aries Mini.
Let the music play!!!
Cheers John.