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In Reply to: Yes, their gain is about 1/5th, as are their impedances posted by Timbo in Oz on April 2, 2016 at 15:26:36:
The VTA ST120 was originally designed to take the 12at7. I later modified the driver board by changing out certain resistors at per instructions I received to take the 12au7 instead for lower gain.
I ended up switching my Chi-Fi amp back to the 12ax7s due to negative effects on distortion levels and the overall flatness of the sound. Will find some vintage 12ax7s eventually. Thanks for all of your input. `
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Follow Ups
- RE: Yes, their gain is about 1/5th, as are their impedances - jaydacus 04:41:26 04/05/16 (1)
- RE: Yes, their gain is about 1/5th, as are their impedances - Steve. 11:30:06 04/11/16 (0)