Go for it Dan, you won't be sorry. I got mine out of the back of a P/U that was going to the junk yard. It was the middle of winter and was -20 C out. I let it warm up in the house for about 5 hours before I plugged it in to test. It worked perfectly and it still does now about 5 years later. It will run speakers of almost any ohmage without a whimper. Sansui built the 771 tough and right. I'll never let mine go. An added bonus is being able to run 3 sets of speakers. I have a Sansui 2000X which is well regarded and the 771 blows it away in every aspect. I hope this helps you out Dan.
Regards
Mark