Paulfolbrecht,
I have one of those Pavel designed Deja Vu PP 45 amps (it also can run 2A3's) built around two big Chicago circa 1950 output transformers and it is indeed one of the best if not the best amps ever made. And it can drive some pretty inefficient (89db) speakers such as Spendor SP 100s, DQ 10s, Soliloquy 5.3s Quad ESL 63 to name a few. I use vintage RCA and Cunningham 45s and RCA biplate 2A3's which gave me the best results although I also have used Sophia mesh plates, KR, Sovtek, and VAIC 2a3's.The amp uses 6sn7 input tubes.
I have one of those Pavel designed Deja Vu PP 45 amps (it also can run 2A3's) built around two big Chicago circa 1950 output transformers and it is indeed one of the best if not the best amps ever made. And it can drive some pretty inefficient (89db) speakers such as Spendor SP 100s, DQ 10s, Soliloquy 5.3s Quad ESL 63 to name a few. I use vintage RCA and Cunningham 45s and RCA biplate 2A3's which gave me the best results although I also have used Sophia mesh plates, KR, Sovtek, and VAIC 2a3's.The amp uses 6sn7 input tubes.