If you have local files, and haven't listened to them except in Android - try it in Mango OS.
I'm disgusted at the improvement. Does this mean I have to forsake Tidal.. >.<
Edit: To illustrate how much of an improvement it is - I tend to own whole albums, just given the nature of CDs. There are many albums which I have owned for many years, but I only ever really listened to one or two songs (didn't like the rest of the CD). The improvement is such that I don't mind listening to almost ANY CD because it's such a NEW/enjoyable experience. I never felt this listening to Mango player on Android with the exact same interconnect/amp/headphone cable/headphone.