Thanks for this tip. Not really looking for a match amp for my 650. But will keep this on file. Am using an RSA SR71B bal, and a Bryston BHA-1, for 650.
Does the C5D "unveil" the upper mids and treble without messing with the relaxed nature of the 650? THAT is the key!
Chord Hugo does that. I have HD 650 + Hugo combo and it's simply amazing. With Hugo, there's no trace of any veil. Hugo's best features are its transparent sound and amazing bass so I think it's one of the best pairings with HD650s. The bass hits hard and clear whilst mids and highs still sound awesome.