I have a Zumo 660 and the Cardo SCALA RIDER® Q2. MP3 music sounds fine from the Zumo using a hardwire, but when I play music wireless via bluetooth it sounds awful, with a lot of static. I understand that this may be due to the fact that the Scala Rider Q2 doesn't have A2DP so the music comes in as mono. But why the static?. Does no A2DP mean static music? I tried it at different volumes and I still get static. On top of that, in order to listen to music with the hardwire I need to turn off bluetooth. Without bluetooth I can't receive incoming phone calls or listen to GPS commands. Is this just the way it is with my current setup or am I doing something wrong? Do I have to go all wired or all wireless? Wireless via bluetooth is obviously the way I'd like to go and everything works fine with that (phone, gps, intercom) except for music.