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RE: Sorry no, its designed in distortion numbers are quite poor

I know it's customary to believe that a 12AU7 used as a cathode follower is benign, because the stage produces no gain, but I recently replaced a 12AU7 with a 12FQ7 (essentially the 12V filament version of a 6CG7) in a vintage Quicksilver preamplifier, and the improvement in sound was easy to detect. One "problem" with the older Quicksilver is that perhaps inadequate current is made available for best performance of either a 12AU7 or a 12FQ7, I admit. I have been thinking about how to pull more current from the PS without stressing it.


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  • RE: Sorry no, its designed in distortion numbers are quite poor - Lew 08:41:33 10/19/15 (0)

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