Okay, I'll probably go ahead and bite later today, and go for it.

I also have an Onkyo TX-SV909 Pro, that was given to me as a gift, and I had never used it. But reading through the specifications, it wouldn't be any different, 110 watts per channel. The only major difference I can find between the two is the THD, between 0.04 on the 909 and 0.08% on the HT-R530.

Amazing though that they paid ~$1,400 for it back in 1988, and it sort of still has some value to it though. Thing is heavier than a cement block.