Your tube amp related Harbeth experience.

I had the Harbeth C7s, and I tried several different integrated amps with them.  The only tube integrated that came close to driving them to my liking was the Primaluna Dialogue HP with KT150s.  However, I far preferred a Bryston B100 solid state integrated amp to any of the tubed models. 

@jjss49 -- I have two system setups in my house. The one in the home office has a glass door plus the usual home office stuff (desk, bookshelves, etc.). However, the SHL5+ are, and always have been, in the media room which has no windows, has a carpet plus rug, and is nicely treated with GIK panels. I spent quite a bit of time and effort in treating that room and placement options, and I can assure you it was not the reason.

If you do a search on audiogon for keywords 'harbeth' and 'bright', you will see a number of folks who have reported similar findings as mine. But keep in mind that it is all relative. What I call bright might be zesty and fun for someone else. Either way, the Qualiton took care of that slight bit of brightness and thinness I experienced with Luxman, but without losing any details or resolution.

+1 on Harbeths with Rogue Audio Cronus Magnum III.  I have SHL5+ and love the combination.  Alan Shaw is right on at least one point - to get good dynamics out of these they need a decent amount of power.  Thus, the Rogue, with 100 W.   Of course, you will get sloppy bass and insufficient dynamics if you try to power them with 15W.   Don't be fooled by the Rogue's low-ish price.  The amps are great.  Agree that Rogue tube amps sound much better than many people give them credit for.