Today someone told me a particular tube amp maker employed SMPS in at least one of his designs.
I have long thought it good to employ a superb SS preamp (or better yet, transformer based) with a glass amp driving the speakers. RM-200 architecture seems to mimic my philosophy, with a SS input and tube output section (uncommon among tube designs). Roger seems very comfortable in thinking outside the box.
What are pros/cons of SMPS for tube power amps in general, or Roger's amps in particular?