While this t thread addresses power tubes I have had a much bigger impact on tuning the sound be rolling the preamp tubes. I’m using Amperex 7316 up front, Telefunken in the middle, and RCA Clear tops in the back. Huge sound stage, clarity, and detail without harness from the tweeter. Works with Led Zeppelin, Norah Jones, acoustic and electric blues, Kenny Burrell, Billy Strings, classic rock, etc.
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.