Name: Rotel RC1570
Async: Yes
Working with Volumio: Yes
Tested Versions and Platforms: Volumio 1.55 on Raspberry Pi 2B & HifiBerry Digi+ on PC-USB and coax input of the RC1570
Harware Mixer on Volumio: No
Comments: All bitrates & sample frequencies up to 24/192 via SPDIF/coax work without adjustments. For USB playback, all streams are forced to 32-bit (s32_le versus s24_3le) with the sample frequency unchanged. This was done by adding Format “:32:” to the USB related audio_output section in /etc/mpd.conf. Without this adjustment 16-bit files play fine, but I get noise for 24-bit files.