Hi there - I may consider bidding on one of these that is available - cited as non working on one channel. I see it has the batwing outputs 2SA1107 & 2SC2587 on each channel. In case these are blown - are there any modern workarounds to replace these? I see that this is cited as being a "high speed" amp - the 2SA1107 has a transition freq of 50mHz and the 2SC2587 of 35mHz - has anyone heard this amp and think it sounds OK? cheers!