I have a Primaluna Dialogue Premium HP amp and have used EL34’s, 7581’s, and last week installed KT150’s. I have not tried the KT120. I totally agree with everyone’s comments about the 7581. Fantastic tube for 30 bucks. Deeper and tighter than the EL34 which I don’t use much anymore even though they have a wonderfully liquid midrange.
I’m only one week in with the KT150s but they do everything that the 7581’s do well but better, particularly soundstaging and depth. I wasn’t at all expecting those changes to the degree I have experienced. Imaging is better too. Everything I have read about the KT150 talks about the fullness, bass depth, tightness, which I agree with, but I was surprised with the rendition of space.
Again, I only have 25 hours or so of actual listening time on the KT150’s so we’ll see what they do over a longer period of time and the honeymoon period has worn off. I’ll wrap up by saying this though, if you are a bit hesitant to slap down 100 bucks per KT150, the 7581 is a fantastic alternative, kind of a KT150 lite. But I really do like the KT150s (all $800 worth, yikes!)
I’m only one week in with the KT150s but they do everything that the 7581’s do well but better, particularly soundstaging and depth. I wasn’t at all expecting those changes to the degree I have experienced. Imaging is better too. Everything I have read about the KT150 talks about the fullness, bass depth, tightness, which I agree with, but I was surprised with the rendition of space.
Again, I only have 25 hours or so of actual listening time on the KT150’s so we’ll see what they do over a longer period of time and the honeymoon period has worn off. I’ll wrap up by saying this though, if you are a bit hesitant to slap down 100 bucks per KT150, the 7581 is a fantastic alternative, kind of a KT150 lite. But I really do like the KT150s (all $800 worth, yikes!)