You can pretty much be sure that a high bitrate file sold to audiophiles has different mastering than a CD or iTunes version sold to kids. Bounce the hires version down and compare apples to apples and you will have a MUCH harder time discerning a difference. Particularly if you use LAME VBR for the MP3. I would bet that you couldn't discern a difference between that at all.
8/23/14 at 11:11am