Roger is one of my favorite people in Hi-Fi (another is Walter Davies of The Last Corp.). Quite awhile back I was in the market for a tube amp with which to drive my (old) Quad speakers, and I went to an instore appearance Roger made at one of his SoCal dealers (Brooks Berdan perhaps). I was debating between his RM-100 and his then-new 30W mono pair. Roger asked me what I was currently using with the Quads, and when I told him a pair the original Quad tube amps, he said something to the effect of "Oh, those are great with the Quad ESL's. Just get some new tubes and make sure all the caps/resistors/etc. are up to value, and keep them". How many amp manufacturers will tell you to keep the amp you already have instead of buying a new one from him?!