I gave up on the sound quality of the SiriusXM radio that is built into the UVO. I have now purchased an external XM Onyx radio and the sound is fantastic. XM has the same channels as Sirius but way better quality. Even the low quality free advertising channel sounds better (the UVO still receives it). The Onyx is plugged into the audio input plug next to the USB. I can recommend this route for anybody who dislikes the poor sound of their UVO Sirius XM. Only downside is it is another item for the car, but it's mounted under the AC/Heater switches and looks good.