Tube DIY Asylum

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RE: Exactly

Posted by Michael Samra on March 2, 2017 at 13:58:13:
MB
Tubes like the 12AX7 Teles you can't go wrong with because those tubes are seldom bad.I have some that literally reason 20% and they work just fine and the distortion numbers are good.
Vintage Mullard 12AX7s I have the worst luck with.I have several of the Long plate mullards and several CV-4004s and at least 35% of them are microphonic when used in a preamp. Now 12AX7 Dutch Amperex DD getters I love to death.