^ yeah exactly. Also, you really do need a pretty good sound system to hear it. I was with the poster above you for a long time, but then I did blind A/B testin

^ yeah exactly. Also, you really do need a pretty good sound system to hear it. I was with the poster above you for a long time, but then I did blind A/B testing on my buddy's $10k monitors, and the difference was clear. I wouldn't call it "night and day", but I had no trouble distinguishing even 320 MP3 from FLAC on his system by focusing on the very high frequencies (3/3, small N I know I know, but I felt like I could've gone on indefinitely). The MP3s lost some clarity in the highs which led to less dimensionality/sense of space ("soundstage"), because our spatial hearing is very attuned to minute transient differences in high frequencies in particular. But you need to be listening on a system that is adequately equipped to reproduce very high frequency transients accurately, which most people don't have access to.