The 12AU7s have less gain and that's why you have more precise volume control which will likely result in better channel tracking. Aside from the TAD thread, you might also check out the detailed descriptions of the various brands of 12A?7s available from Joe's tube lore at Audio Asylum. You will have a bewildering array of choices since there are probably a half dozen variants of each of those basic tubes and usually multiple manufacturers. One thing you should think about is how much is appropriate to spend on NOS tubes for a modest cost unit. For example, I think that the Gold Pin 5751s are now going for well over $100 each!!!
Time for new tubes.. which ones?
My TAD-150 preamp which has only 2 tubes stays on all the time, so every year I have to replace the tubes. This is my first time replacing them. Does anyone have an opinion as to what tube to use, or should I just use the same replacement ones from TAD? I would like to improve the sound if possible with new tubes. Thanks
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- 14 posts total
- 14 posts total