Overview   I listen to all types of music: from mixtapes of dubious quality from DatPiff to FLAC rips of half the MFSL library. I'm generally listening at my desk, though I also listen walking the dogs, walking myself, on the subway, lying in bed. About 65% of the music I listen to is rap, 10% electronic, 25% rock/pop of some sort. I'm a music critic, and my usual tools for evaluation are the Audioengine A5 speakers, Denon AHD2000, Shure SE215, Apple iPhone earbuds, and now these, the PSB M4U1. Honestly, I just listen to a lot of music with...