cocolinho
Headphoneus Supremus
Stories of the HD 600's remarkable scaling abilities with expensive amps are grossly overstated. Some tube amps noticeably change the sound but between well designed SS amps, you wont notice much (or any) difference.
I would agree with this. There are very small differences between my HRT microstreamer and a very reputable combo Concero/627x
Of course I still find Concero/627X sounding better with a larger/deeper soundstage but the difference is not night & day, far from that