I had a chance to hear them recently for about an hour with one of my favorite artists on CD. The electronics was NAIM (solid state). I liked the speakers a lot, good soundstage, good resolution and it really felt like the singer was in the room with us. I felt that something was a bit off but couldn't place what it was; my wife thought it was the vocals, though on subsequent listening she was less sure. My understanding is that the should work well with tubes as long as they are around 20W or so.
