@jimmy2615 I have a Primaluna Dialogue Premium integrated and have rolled tubes a bit, including KT88’s and 6550’s. I, always, come back to KT77’s. To me, I find KT88’s (Tung Sol & GL) and 6550’s (EH) have more bass, but loose significant detail. KT77’s have it all. I was not impressed with Siemens el34, either. I would like to try some Amperex el34’s double-D getters, but need another matched pair. Also, I would like to hear how vintage 6L6’s sound in a Primaluna. A friend swears by them in his guitar amp. Though, not the same equipment.
KT-77 vs. KT-66
As I've had my QS Mono 60s, I've tried a variety of tubes. I have sold off my KT 150s, and use KT-88s from time to time, but what I really love are KT77's.
I'm thinking of getting some KT66s, thinking that lower powered tubes are better (to my ears) matches for my system. I just don't know what the KT-66's sound like.
Question: If you have compared KT77 and KT66 tubes, what would you say the sonic, audible characters of each are? Is there a difference you can hear? What does the KT66 sound like -- to you?