Sophia EL34-ST Tubes

KT 150 Primaluna valves for sale. As new. 

While the Sophia EL-34's were a huge improvement over the Tung Sol EL-34B's in my Unison S6, long term listening has revealed them to be too bright on some recordings.  I also tried the Gold Lion KT-77's and found them to be similarly bright while otherwise less impressive than the Sophia's.  Since the amp was voiced for EL-34's I have ordered the Psvane EL-34PH tubes (replica of the legendary metal base Phillips EL-34's) to try.

I will report what my listening experience is once they are broken in and I've had several months of listening to them. 

cellcbern44 , I would appreciate a report on the Psvane EL-34PH and how they compare to the Sophia EL34's. Thanks.

I have the Prima Luna Premium Dialogue HP Amp. I was using the KT120 tubes for the last 2 years and although these are very nice tubes with airy highs and tight bass with plenty of slam, I found the midrange muddy and fatiguing. I switched back to the original EL 34 and found the magic again. I recently decided to try the Sophia Electric EL 34's based on all the good things I heard about them. They have about 15 hours on them (100 hours is the break in time) and they sound fantastic. Wider and deeper sound stage, more transparency, voices come alive in front of you and plenty of bass and slam. Extremely happy with them.