I have been running my 80's for over six months now and had not had any probs with overheating on the Sony. I have pushed the Sony very hard over this time and it seems fine.
I live in Australia and receivers are pretty expensive here and buying one from US would probably mean that I won't be able to use the tuner as the broadcast frequency range I assume is different. This means I wouldn't be able to pick up any radio stations with the inbuilt tuner.
Has anyone tried the speaker level to line level converters? Are they likely to produce a lower quality signal?
What if I used the heaphone jack as a pre amp out signal. The only thing is I don't know if plugging in a head phone plug may cut of all speaker outputs.
