No way a dinky SET will drive those speakers. @atma-sphere has told me more than once that high sensitivity, full range passive speakers need some grunt even if the specs suggest otherwise. This same idea has been reinforced many times in reviews and on these forums. I'd want at least 50 watt/side of tube power. I do confess to occasional loud listening.
Looking to move to a Tube Integrated setup
I'm moving from solid state class D to a Tube Integrated amplifier and have narrowed it down to (2). The Ayon Scorpio II w/KT150's and the PrimaLuna DiaLogue Premium HP w/KT120's. Does anyone have any experience with either or both of these they can share. Recommendations? Others I should consider in the $3K to $6K range? My speakers are relatively efficient at 98dB.