Hi Snopro,
Congratulations on the Frankenstein purchase, I think you'll be very happy with it. The EML XLS has been an unexpected surprise for me. Yes it has a very good reputation and I thought it would sound well in my system. The result bettered my expectation, it mates beautifully with Frankenstein and is a joy to listen to . The music just flows. Vocals and everything else are reproduced wonderfully.
Snopro, the high quality 300b tubes bring out the best in the Frankenstein. These better tubes aren't cheap but honestly this amplifier is worthy of
them. Israel is a no nonsense guy and candid so I believe that the Psvane is a very good match as well. The splendid Japanese Takatsuki-TA 300b has been my very best choice for the Franks but they're so darn expensive (1800-2000 per pair). The EML at 685.00 is by no means inexpensive but relative to the Takatsuki they are.The Takatsuki is pure organic bliss with excellent dynamics and everything else thrown in. The EML is a"bit" more dynamic and not quite as organic-fluid (but surprisingly close). The EML XLS is a exceptional value for a truly premium 300b. Takatsuki is the ultimate price be dammed choice but it doesn't embarrass the EML performance, no sir!
The AVVT 32 SLis another top tube but are no longer made and very hard to find.
The Sophia Royal Princess sounds excellent in the Franks also, at 1200.00 I cant say they're better than the EML XLS.To be fair I didn't have them together at the same time to compare.
Any of these top tier tubes will allow the superb Franks to just sing toits full potential.
Charles,