Lynn makes note of hearing Purifi Class D amps at the show in a favorable way. I did hear Atma-Sphere's new GaN mono amps driving the the Tekton Moabs and I thought they sounded excellent. I could easily see a synergy between the Raven and Ralph's mono amps and I personally would require a tube preamp with any amp I might choose to use. That Ralph has made such a move to Class D technology after decades of being a tube designer/manufacturer ought to make the audio community sit up and take notice. What I heard of his $5500 amps was very impressive. Of course, let your ears be the judge.
I am luxuriating with Don's DS2 preamp and his new 300b monos driving my now run-in Cube Audio Jazzon speakers. I am enjoying the sound in my room to a degree that I have never experienced before. From morning to night...