Ok hey new here, but i got a Rockford Fosgate T20001db amp, and it fell off my amp rack about 5in high only, and i hooked it back up and my subs were distorted, tried my subs on another amp and worked fine. Took the fosgate to a shop they said the GAIN knob broke on it and thats the reason it distorts my subs //content.invisioncic.com/y282845/emoticons/verymad.gif.3f39c5c2fd57527b671fad3efdfac756.gif?!?!?! They never said they can fix it. When they opened it all the boards were good, and it still powers on by the way. My question is is there a simple way I can fix myself? Like is there a place to buy the part and do it myself? Or any of you in Southern CA that can do it ill pay good! RF reps told me they can but i got to pay shipping and wait lol cant wait! Please help IF you can, and im new to car audio btw! Thanks in advance