Hi Fla, power requirement is a favourite theme among Tidalists. I have adopted the view expressed by most: "don't parch them!" It would be a terrible waste if you lost the beauty of what these speakers can do because the amp runs out of breath. I heard the Piano Cera in a fairly large auditioning room (still have a picture of that on my system thread) with 2x 140W (8Ώ) and I thought it was a perfect fit. Of prime importance is, those watts need to arrive "clean" and they need to arrive as fast as lightning to catch the dynamics that Tidals excel at.
Having said that, when I still had the Unison S2K with its 2x 15W from 2 KT88's, I had to try my Contrivas with it, of course. From that experience only, I'd say if your room is smallish and the music you hear is mainly small combos or solo performers, be it jazz, folk, blues (great !), renaissance or chamber music, I believe a pair of SET 300B's or 845's can take you to nirvana. Don't take my word for it, though, but do try to audition the pairing in your own room.
Would be brilliant if you could choose from 2 alternative amplification paths, of course :^)
