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ID this Dynaco ST-70 board

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Unidentified Dyna ST-70 board. Anyone have any idea which company's board this could be?
I got it in a 'grab box' of ST-70 parts.
 

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Hello, thanks for taking a look. Could be. The NP marking is actually ' inside' the layers of board material itself- not silkscreened on. Its a nice board- substantial tracks, plated through holes, soldered well. I'm considering trying it out in a build and would like to know, if possible 'what it is'.
 
Ned used to be at Triode, but he's been gone for nearly a decade now. He had a three tube board that was designed by a guy who I believe died about 15 years ago. After the fire at Triode, the board and artwork were lost and I supplied the new boards for them. Before ned got back on his feet I asked if I could re-layout his board for my own use. After that he bought them from me. I didn't design it, but rather just re-created the original design.

I don't believe Triode ever had a two tube driver board, but they might now.

Sheldon
 
I've had it 5 years, and the guy I got from had it a while as well. I dont see anything at triode or the other big dynaco sites that looks like this. I'm aware it's just a copy of the stock dynaco- I was just hoping someone could say "yeah, that is so & so's board from around 1990" or something similar. Thanks for looking.

It came with a couple of tubes the guy said are 7199's- but they have NO markings on them at all- been rubbed off I suppose. I have wondered how to tell if they are even 7199's.
 
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I've had it 5 years, and the guy I got from had it a while as well. I dont see anything at triode or the other big dynaco sites that looks like this. I'm aware it's just a copy of the stock dynaco- I was just hoping someone could say "yeah, that is so & so's board from around 1990" or something similar. Thanks for looking.

It came with a couple of tubes the guy said are 7199's- but they have NO markings on them at all- been rubbed off I suppose. I have wondered how to tell if they are even 7199's.
Follow the pins ! 7199 has a unique pin-out, so by examining the socket connections and comarig with the schamatics will tell which tubes that fits.
 
Thanks a bunch for the schematic. A populated, but never installed Curcio quad cap board was also included in the box of parts. I think I will try to build an old chassis I have and use this driver board and the quad cap. I was going to go with a VTA board, but lately, have been considering building what I already have first.
 
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