Well, my forever system changed again. Traded in my conrad/johnson CA200 control amp for the Cambridge CXA81mk11 which I am using as a pre-amp for my Willsenton R8 tube amp. This is best sounding system I have ever had, period! I was unable to play my JLAudio F110v2 with the Willsenton R8, now with the Cambridge the sub is back in the system and the difference is like night and day. It actually sounds like I have new speakers, that's how much of an impact this change has made.