[PROBLEM] Cyrus soundkey intermittent distortion

[michaelagiles]

I had a similar issue with a Pi3b and IQ audio PiDac+ - regular but short (2 secs?) bursts of noise/distortion. It turned out to be the WiFi "searching" for a connection and producing RF interference in a badly shielded pre-amp. I think! Since I was using ethernet connection, it disappeared when I turned off the wifi.
Just a thought!
MG