Been using a VTA-70 that I assembled for a few months now and it has been excellent for me.
I am running it with GL KT66 and Electro Harmonix 12au7 driver tubes.
Amp has about 250 hours on it so should be mostly stable at this point.
What I am looking for is a recommendation for 3 driver tubes or combination of driver tubes that would soften some of the brightness of my tweeters and maybe add some bass. Any recommendations much appreciated.