gonk: needing two seperate circuits is sort of a "sporty" proposition for most of us. You would either have to wire an additional circuit to your listening room or run one of the plugs to a different circuit in another room. Neither of these options appeal very much to me.

Of course, with audio, you are looking at peaks not continuous duty. I went and looked at the manual for the 770 to see if I could tell what the fuze in the input line was. I did not see it specified. How big is the fuze in the 750 that you have?