Yes, doing another "back to the future" review of AD2000. MA900 > AD2000 on the EC amps mainly because the AD2000 has some warts in FR. But close technically. AD2000 never seemed resolving enough - that is couldn't scale to keep me happy - on the EC amps. MA900 I feel is better in this regard. But I need more time for them to battle.
I believe that the MA900 is now discontinued. [/font]
CONSTRUCTIONFirst of all, the MA900 feels extremely cheap. The headphone lacks heft and uses thin pieces of plastic.....
still feels cheap.
The PFR-V1 was neat if it wasn't so painful to wear. They had a unique sound! (not complete shit, but not worthy of the pain+price)