There is a good interview by New Record Day of Dan Wright of Modwright. NRD asks, "Tubes or solid state?" Dan answers something to the effect of, he’d prefer not to choose so that he could run a combination. His preference is tubes for the preamp and source gear, and quality solid state for the amplification of that tube signal in the cleanest way possible. Makes sense. I am on day three or so of my new-to-me Modwright KWA-150 SE, which replaced a Rogue Stereo 100, and the overall effect is at least as smooth as the Rogue - maybe smoother. "As long as there are tubes SOMEWHERE in the chain," Dan responded. "But if you make me choose one or the other, I would choose tubes." I run a tubed phono pre (Rogue Ares) and a Modwright (tubed) LS100 Pre, and the combination with the TOTL KWA-150SE is fantastic.