NOS preamp tubes in a guitar amp?

[Ron Vogel]

Originally Posted by Naindurth

I changed the V1 Preamp tube of my Vox AC30cc2x six months ago, because I felt it was a tad too bright when driven and pushed.
It had a ruby 12ax7 and exchanged it for a Sylvania 12ax7wa from 1969.
Definitely something I'd do again. We tried different tubes while I was standing in the same spot playing with my guitar. The changes were subtle at first, then it starts to shine. It's not night and day, but it helped me a lot in the search for the right tone.

Sylvania's are going to be a subtle change fer sure...I find them and the GE's better suited for audio applications.

If you ever find one...try a Brinmar or 60's Mullard...that's what God intended that amp to use!