I recently installed my X910BT with a Pioneer CD-SB10 adapter and Sirius SC-C1 tuner. The Sirius sound quality is terrible. It sounds distorted and "tinny", like a really heavily compressed audio file. The iPod interface is phenomenal... almost CD quality sound. I expected the Sirius quality to be equal or better. When switching to Sirius, I have to turn the volume way up and it sounds like the music is playing through a garden hose. Even the AM tuner sound quality is better.
My wife's car has a dash-mount Sirius tuner plugged into an aux-port on her factory Toyota tuner. The sound
