I used to play drums in a studio with a few bands back in the day so I guess I have a bit of an ear for what sounds good, well for me at least!   I bought the AK70 as I travel a lot and my phone sounds crap and drains the battery when I listen to music. I read a few reviews prior to auditioning at Harrow Audio in North London. To be honest I can't believe just how good the unit sounds even through my IE80's, I need to get better IEM's! The first thing that you notice is the huge sound stage both deep and wide and just the shear timbre of sound. The...