Hi. Your local fool here - I think I already know the answer to this but because I want it to be a different answer, I thought I'd better just check with those who really know! I have an AV amp (horrible buzzy thing) and my lovely Bow Wazoo. One room, one set-up, one pair of speakers to use for hi-fi and AV. Now, I could piggy-back the outputs to save me from unplugging/plugging each timr. With the unused amp switched off, would any damage occurr? Ta! Andrew