Quote:
Originally Posted by Hank Mardukous 
Yes, that hum can be a noise floor measurement. I have some silent old amps, (to human ears) but others produce a hum when the volume is turned up with no source playing. A newer Denon 3808 amp is very quiet in regards to that hum, until it is cranked right up. I have restored an older Pioneer and it is now very quiet as well. I wouldn't guarantee "silence" results from reconditioning
gear, as I'm sure this can vary. If your friend isn't worried about it by himself, I wouldn't get him concerned about it.

Yes, that hum can be a noise floor measurement. I have some silent old amps, (to human ears) but others produce a hum when the volume is turned up with no source playing. A newer Denon 3808 amp is very quiet in regards to that hum, until it is cranked right up. I have restored an older Pioneer and it is now very quiet as well. I wouldn't guarantee "silence" results from reconditioning
gear, as I'm sure this can vary. If your friend isn't worried about it by himself, I wouldn't get him concerned about it.
Thanks for the feedback. I am not going to worry about it as you can't hear it at all from the listening position. This weekend, when I have some time, I want to compare the two amps and see which one sounds better.




































