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In Reply to: RE: Mystery OTL maybe??? (pic attached) posted by Rich Brkich on February 17, 2016 at 08:12:34
This is an amplifier that was built by a friend of mine, based on the early MA-1 circuit, but using 8 power tubes per channel. I'm pretty sure it runs series filaments.
If I remember right this amp was built as a one-off about 1985 or so.
Quite a bit of skill there on the part of the builder for a "one-off"
Looks like nice work and a lot of resources and time put into the effort.
He got some of the parts from us. The chassis was re-purposed.
Looks like REL TFTF coupling caps in there, although from this view I am not sure. Were those available back then? Toroids are advanced as well.
The chassis is undoubtedly from a 6U rack mount computer. It does have REL-CAPs in it. And it does say ATMA-SPHERE inside.
But we've had the toroids going 'way back.
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