I'm in the market for a new headphone.  The only headphone I have is a Sennheiser 215.   So i want to upgrade and not sure what's best for me.   OPEN or CLOSED - i think i want to try an OPEN one this time.    BUDGET - max $400   I like to listen to acoustic/live/unplugged music.  I...

Hello,   I'm in the market for an IEM.  maybe in the $100-$150 range.   I currently use a Senn HD 215 but I want something that I could use outside.   I'm thinking of buying a DAP : currently looking at the Hidizs AP100.  So the IEM should also work well with that DAP.   The kind of...