I just picked up a set of the M50x and they sounded OK. But then I plugged them into an Audioengine D1 and that brought them to life on my mac. The detail and crispness of the sound was amazing.

I am curious now if I should be looking into something like i Fiio E11 or E12

Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5