Bad Sound quality from my system, need some help.

[beemer740]

Hey guys, i just picked up an 06 chrysler 300 srt8. The previous owner left the factory nav head unit but had a shop replace the factory 6x9s in the front doors and rear deck with some rockford fosgate ones. Then they added two amps one 4 channel and one mono for the 2 12 rockford p2 in the trunk. They used an lc2i. The factory headunit settings are all at 0. and i have the gains on both rockford amps set at around 6/11. The lc2i's setting are also in the middle. The ouput isnt distorted but doesnt sound clear. Any help on what could be causing this? Thanks

[West]

Replace the head unit with a good one.

[West]

I also don't like rockford fosgate at all they could be the issue. Have you tried different gain settings?