This came to me heavily modified in the 1980's, possibly by NYAL. There were rough holes cut in the chassis for a connector to an outboard HV regulator. Most of the resistors were replaced with mil spec metal film or non inductive wire wounds. Caps were Sprague and photoflash.
Note - I see that the captions on the photos did not show up in the ad. The 2 photos that have the date 3/31/11 are the "before" pictures. The rest are"afters".
So this is an original 8B (not repro) but post restoration it sounds much clearer than stock and better than when it came in. Holographic image with depth and good extended bass. If it could have been restored to stock I would have.
But if you do get an old pristine amp in original condition, you WILL eventually be replacing electrolytic caps at some point and probably a few resistors that have drifted out of tolerance. So what is done here is not out of line.
And it's better to have one that will be reliable and seductively listenable than one that is a listener's curiosity.
I decided since the chassis was already hacked up to clean it up and replace a lot of part with new or better.
So here's what's new:
-Ultra fast rectifiers (all)
-Filter caps - about 10X original capacity. Original can was left on top, disconnected for the looks.
-Mundorf Silver/Gold/Oil Supreme coupling caps
-Solen bypass on input stage B+
-Power switch - I had a hole that needed to be filled and it was a pain to pull the plug to turn it off.
-Open holes covered
-Cardas RCA Jacks.
-Minor circuit mods
-Cleaned and restored bias switch and meter
-Removed outboard regulator connector
-Regulated bias supply (came in with it and it's a good thing)
-Service manual print included with mods marked in.
Amp measures 50 watts per channel into 8 ohms off 8 ohm tap.
Plenty of bass.
Plug and play. Great with Quads or any transparent speaker.
I'm the designer and engineer that built New York Audio Labs OTL's and invented the Moscode Hybrid amplifiers and built Chesky Record's recording chain.
I can send you more photos but these should tell the tale.