using Volumio, I have a lot of high-pitch clicks on my speakers when no music is playing using the SPDIF. Happens on Raspberry Pi 3 and 4. Interface is the Digi+ Pro. I tried two of them. The amplifier is a Hypex PSC2.400D connect via cinch output to the digital XLR AES input.
Also I tried a Tinkerboard with the onboard SPDIF. That's working fine.
Any idea, how I can avoid the clicks? I already tried the jumper on the HB Digi.