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In Reply to: RE: Follow-up on new build ST-70 with the 6NS7 tube posted by JoshT on April 01, 2023 at 09:14:38
That the 5963 is a very linear tube replacement for the 12AU7. Anyone here used one in place of the 12AU7?
Follow Ups:
Below is a link to a post by Airtime, where he specifically tried a 5963 in his VTA, back in 2016. His results weren't good, even compared to a GE 12AU7, as you'll see in his post.
But the 6SN7 worked wonders for him as the gain tube, as a point of reference.
in the middle spot as well with the 6SN7.
I did order and receive the VTA Octal pcb for my VTA-120 from Roy. I'm going to upgrade some parts on the Octal pcb. First thing is the all the coupling caps, then some of the resistors. I will be installing the Auto-Bias Pcb that I had purchased awhile back.
...in comparison to your noval board. There was some talk of the elimination of octal board sales when the new owner took over VTA. I hope they don't, but maybe I should order one, just in case.
Like you, I'd be changing most (if not all) of the supplied parts anyway, so if I do order one, I'll opt for a blank board.
now that I have finished my EDGE M8 power amp and its back in the system sounding awesome. I now can shift my attention to the VTA-120 octal PCB and Auto-Bias installation.
Even though the Crown sound good, it will go back to why I originally bought it driving my other project the JBL 4345 in biamp mode. This should be the last project I do since my DIY 2 way horn/ 15" speaker is almost complete.
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