Xtreme Sound WMS303 CD Player "fidelity" Questions

...with separate Amp and use low pass filter @78hz cuttoff. It's a cheap unit -don't expect High Fidelity & a warm ...

car cd player ..................no sound my car cd player ...............sound to all speakers quit playing.......player is on and seems to be working. I have replaced player 3 times and works for a ...

...largish chunks of the frequency spectrum. At any rate, the Aux jack is nonfunctional as a high-fidelity audio source. Is there something I'm doing wrong with the settings on this thing? The Aux ...