Well I've noticed one thing about this one, the audio on this one is pretty bland. I can't pinpoint why though. I use PowerAmp and usually it sounds incredible but not even it's equalization is helping it. It's very flat sounding no matter the volume or setting. I went through the DSP Manager and it doesn't seem to have any affect on sound at all no matter what I use or do. I tried Apollo as well and got the same results.
Aside from this, this ROM is just super well built. I'll probably go back to the one I had before and use it till this one gets an update later. It's purely because I love my music a lot.
Odd. I couldn't tell much difference going from stock to this. Also using PlayerPro, Google Music and Apollo. Are you running the the speaker on the phone or what?