Charles,
Thank you. I recently decided to go away from inefficient loudspeakers. After enjoying this hobby for 30+ years, I finally am able to see what I have always been looking for. The pairing of a SET amp to high efficiency speakers is a life changing revelation for me. I initially purchased the Dynamo and was amazed with the speed and detail and "air". It felt a bit thin at times though and it was brutal with poorly recorded/mastered music. I felt that I was on to something though and demoed a few other SETs and decided to also try the FW (low power, simple circuit). I had the Dynamo out of my system for a few days and I don't know if I can attribute it to break in or simply that I had forgotten it's sound, but when I put it back in, my jaw dropped. Nothing compared to that amp. Israel proclaimed that as good as the Dynamo is, that the Frankensteins are better in ever way and "on a completely different level". I really did not want to spend the additional money, but with what I heard and with a proclamation like that from someone who does not exaggerate, I knew that I had to act! What I am trying to say is that, like you, I believe I have found my last amp.