Instruct: Classify the given review into positive or negative sentiment.
Query: Great idea - but sound quality suffers

I have an XM-ready Onkyo SR-603X, and bought a Connect and Play, since I love XM so much in my car. Setup was easy, I got a signal quickly, but the sound quality is poor. When I listen to DVDs, CDs, my iPod, even FM radio on my Onkyo, they all sound great. XM, however is a big disappointment in sound quality, even though my signal strength is over 80% (70% is recommended). It sounds nowhere near as "full" or detailed as I was expecting.Listen before you buy and be careful.