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In Reply to: RE: Buy tubes from the right vendor that meets your needs because they do sound different. posted by Freo-1 on April 22, 2017 at 16:05:39
Is a 7058 pin out compatible with a 12AX7 wired socket?
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Clearly, the triodes inside are the same as those in a 12AX7. Pin 9 is the "rub". I've seen documentation indicating a pin out the same as a 6922. The RCA data sheet says don't use pin 9. What came in boxes labeled 7058 could easily have been 12AX7s. If pin 9 is unused ("12" V.), both will work just fine.
Eli D.
Yes. I used it as drop in for a Conrad Johnson clone preamp, and it sounds great. They look exactly like RCA 12AX7 tubes.
"What this country needs is a good 5 watt amplifier!" (Paul Klipsch)
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