Thanks JDB, I'll remember that... I ended up going with a HDMI cable to an 'audio signal extractor', then to RCA's into the amp... the sound signal is infinitely cleaner (seems a little louder, but hard to tell for sure), however, boosting the output to ~0 dB with alsamixer gives me the sort of volu...

Sorry to dig up an old thread, but those posting here seem to have some knowledge I need to learn from... :) I have a Pi 2 running Volumio and supplying anologue audio to an old Sansui AU-555A amp. ( http://stereonomono.blogspot.com.au/2014/02/sansui-au-555a.html ) The amp has a stated input sensiti...