I listen to a lot of audio only podcasts. Really just hour long music mixes. I have noticed that the audio is far more distorted and muddy compared to 5.1.1. I've also fooled around with every EQ setting and they almost sound the same with no change. Listening to music normally however doesn't produce this so it seems to be a podcast only issue. Additionally, I also noticed that while in the music app, I constantly see the spinning data wheel at the status bar. I have turned iTunes match off to see if that's what was causing it but it's still present. Again, I didn't have this in 5.1.1. Have they changed something that now accesses your music library? Is it Genius constantly updating?