i just got a profile 80x4rms amp installed in my car dirinvg 6.5 componet polks in front with 6x9 polks in the back each with 100watt rms and 300 peak...the ugys had it sounding good but it wasn't much louder just cleaer...so i went to turn up the gain and i alos played with everything else and now it soudns bad...someone help

 

Just take it back and ask the folks the installed it to reset it because you screwed it up. Hopefully they won't charge you to do it. While they do it, watch them and ask many questions so you know what you are doing next time you change the settings. Good luck.