hi,can any one help.im using my ps3 with music saved onto it outputing via optical into dac magic then phono into onkyo 605 set to pure .this works ok with my audio files.but i found when i play games i get no sound so i fitted an optical lead to the dacs optical out,now when i try and play audio files the sound keeps droping out every 10 secs and sumtimes the amp switches out of pure then back in again.removed optical and works fine with music again.any one got any ideas before i blow somthing up