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RE: Least fatiguing 12AX7

54.188.176.172

In Reply to: RE: Least fatiguing 12AX7 posted by SoundMann on June 04, 2024 at 18:27:57

Changing parameters can alter sonics so there are many variables for sure.
The debate about rectifier tubes may be partly due to voltage drop characteristics changing the operating parameters.
Using a 5751 in place of a 12AX7 seems to be fairly common lately but why focus on tubes as if capacitors in use are the be all end all?
My experience has been with vintage equipment and I've found that changing capacitors can alter the sound from the moment you turn the piece of equipment on with no so called breakin and sometimes a $2 cap just sounds better than a $30 "audiophile" cap and it's far less expensive than chasing NOS tubes. Not that tubes don't make a difference but why be restricted to them.

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Follow Ups:

RE: Least fatiguing 12AX7 - SoundMann 13:21:42 06/05/24 (1)
I have been thinking about adding a few oil caps in a couple of critical places.
- RE: Least fatiguing 12AX7 - DaveV 15:10:27 06/05/24 (0)
  Paper in oil caps may produce a warmer presentation but don't overlook NOS or new polyester film and foil capacitors.
  Sometimes an under $2 Illinois Capacitor Polyester Cap seems just right and placement in the circuit can matter when you start changing caps.

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