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In Reply to: RE: Help me ID this ST70 mod posted by Idler on March 15, 2016 at 12:56:17
Many tube mods for the Dynaco were done using three input tubes to replace the 7199 tube. The CAE mod always used standoffs on the input board attaching it to the chassis. I really don't know all the boards out there but the CAE from my past knowledge used standoffs. If it has them it could be a Curcio. I also think Triode Electronics used them as well now thinking about it but I think Triode Electronics has it's name on the bottom of the board.
What tubes does it use on the board?
Follow Ups:
The tubes are 6922's. It looks, on further consideration, like Curcio's Cascode Differential Amplifier Driver Amplifier w/ Active Current Source, which is a 4 tube driver board.
The Audio Research mod, according to ARCDB, has 6 to 7 tubes on the driver board.
Thanks for the response.
Idler
If it is, it doesn't have the same arrangement of caps as mine does.
A bigger, clearer picture would help.
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