Mike, Can you swap in another home hi-fi amp, just to confirm that the problem is in the amp itself? I used to have an amp that would occasionally go very quiet - still audible and still a good sound, but very much quieter. It would happen randomly, but usually some time after switching it on, and sometimes thumping the case would correct it - I suspect it had a dry joint somewhere. Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist