AKG and Beyer need amps, X2 would benefit from an amp, in fact, all headphones do. If you like bright and detailed treble with textured bass then go for the beyer. I have not heard the X2 but people usually describe it as bass heavy with smooth treble. For EDM, HE-400 is usually recommended, it needs an amp.
6/29/15 at 2:35pm