A friend pointed me at this interesting ABX test website that compares MP3 audio compressed at 320Kbps with MP3 audio compressed at 128Kbps.  Comparing A vs B and hearing discernable differences is one thing – but can you blindly hear a track and correctly identify it as A or B?

In the A vs B test, I could hear a difference between the two clips in each test, but there was very little in it.  It would seem that MP3 compression technologies have improved a lot since I last used them with any seriousness.

As for the “blind” test, it turns out that despite today’s tiredness, my use of Sennheiser HD25’s on a standard laptop headphone output, my hearing isn’t so shot after all!

Try the test for yourself here at mp3ornot.com!