If your amp can run 6L6 tubes, it would be interesting to try some vintage tubes of this type. While they don't deliver much power, I really like the sound of that type of tube. I also like 350s, but at close to $1,000 a tube, that experiment probably will not get off the ground.
Rolling KT150s in Primaluna hp integrated
I’m a mere five hours into these. This is an alive and kicking tube. It’s like it had a double espresso before the music starts. I’m hearing big and strong delivery, but that’s so overwhelming that I cannot focus on midrange. It’s clear I need some time with these.