Just curious how this particular attenuator attenuates? My second question is whether you can mismatch the cab/hotplate impedance as long as the amp/hotplate impedance matches? I have a 16ohm Hotplate and I want to play my Concorde through my 8ohm cab. If this can be done safely, do I set the Concorde impedance to match the Hotplate or the cab? I read the Hotplate manual and it mentions that this could be done, but that it would "lessen the affect of the Hotplate's tone controls". This I don't care about. Just want to make sure that I am not damaging my amp in any way.