What brand 12ax7 will brighten up an amps sound? Or what brand 12AX7 is known for having a brighter sound?
I think Tung Sols are meant to be fairly bright. I suppose Sovteks would be considered bright too, but I found them nasty, ice-picky kind of bright instead of sounding nice.
The cheap Chinese made tubes are often very bright, edgy and gainy. EH tubes have a nice spiky tone to them too.
JJ's brightened up my amp quite a bit...
JJ's are known for their ability to darken an amp. Which is why they work so well in Peaveys.JJ's
Tung-sol are v. bright
Tung-Sol are bright, smooth and balanced, the latest Chinese AX7s (look at TADs) are quite bright also, but in a V30 kind of way rather than a Sovtek kinda horrid fizzy way.