Too many. I cant keep track of them. Surprised at the shuangang tubes..how many of tgem are actually different manufacture i wonder. I used to know the factories and the brands associated with each but i stopped paying attention. Havent purchased new current production tubes for a long time
I put current production tubes in customers amps but they don't care what I use. My amps get vintage pulls mostly that have been scrounged from old gear and organs. I can hear some differences in tubes but really don't care, as long as they work. You'll never hear it in a bar anyhow. I think the cork sniffers are mostly audio guys, and they are full of BS! LOL...BN
