Originally posted by SoundQ SVT:
I have a Sirius tuner that is fed into my head unit via line level (not fm modulated) and it sounds really good.
agreed. i really have no complaints with mine. fwiw, i have a dei tuner feeding into an alpine 9831.
maybe your reciever is malfunctioning? 
02 Mustang GT... Tuned by Nelsons. Low 12's, anyone? 
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