I just got my HTC One from Verizon yesterday and noticed a horrible sound quality when streaming music through Bluetooth. I'm streaming to LG CM4530 stereo system. The distortion is just unbearable during high pitches. The problem persists regardless the volume in both the phone and stereo, the app used (tried Pandora and Play Music), turning Beats Audio off or even cancelling the EQ on the stereo system. I'm convinced that it's not the app because I just replaced my old and slow Droid 2 Global loaded with 2.3.4 Gingerbread and never had any problems with A2DP sound distortion. (Yes, ironic.)
Many point that the problem is on the stock HTC ROM, but I haven't hear of any fix so far. Any suggestion?