Tubes Asylum

RE: Oh wow! So I could do that too with my ST-70?

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In Reply to: RE: Oh wow! So I could do that too with my ST-70? posted by JoshT on March 15, 2023 at 09:39:37

Airtime is a member over on AK where we all who built the VTA kit/s went to help or get help. There was a thread over there a while back may around 2015 and Skizo was the one who mentioned about putting a 6SN7 in the middle splitter spot I tried iy and I think Airtime tried after I did but I could be wrong. That is where the biggest difference in sound for me happened. I was using Northern Electric 6SN7's in that spot but they kept humming. Then I was on the Upscale Audio site and saw Kevin found a bunch of Russian 6H8C (Equivalent to 6SN7) and were cheap. I bought some and that was the ticket! Had the same sound as the NE 6SN7 but with better mids and bass. I have been running it ever since.

Yes, you will need a 6SN7 to 12AU7 adapter to make this work. My PCB came with my kit but if I'm correct, Roy offers a 6SN7 Octal pcb for the VTA-120 and 70. Some will say you can't run that tube in the 12AU7 spots but I only used it in the middle splitter spot and has worked fine. I would check out the threads over there to see what we all did. My Moniker there is Drummerboy2.

Skizo, Airtime, and another person were all helpful and offered a lot of info and help to others.

Happy Reading! :)

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