Postby rjohns1 » 16 Feb 2012, 11:07
I have a pair of Mullard 12ax7 tubes out of a hammond organ. They are from 1962. I've noticed in several amps I have owned, and 2 of them were Marshalls, that the difference was really noticeable from the CP tubes I had. I compared them with a TungSol 12ax7 in the v1 position. There was a noticeable difference in the highs. It was clearer without getting brighter. You could tell that it was a better quality tube. It's hard to describe, but it was enough that anyone would have noticed it. On a G chord, the individual notes seemed to jump out more, and it had a little more "Kerrang" to it.
2010 Egnater Tourmaster 4212, with 212 Extension cab
2009 Mod Amp 101 60 watt EL34 Single Channel (Kit Amp, built and tweaked by yours truly)
2003 EBMM Axis (Trans Amber, PV Wolfgang Pickups)
2007 EBMM Axis (Tobacco Sunburst, Stock)
Mid 80's JapStrat
Eventide Factor Pedals (Mod, Time, and Pitch)
Hot Rodded Crybaby
Peterson Strobostomp
Fulltone Catalyst and OCD
Pigtronix Philosopher's Tone
Blackstart HT-Dual
Dynomite Phase9000 (BYOC kit)