Start with every setting on you amp turned down. On your head unit "your radio" turn all the bass settings down Treble up, mids should still be at mid range. Turn the volume up to where you usualy listen to your tunes, then just slowly tune in your amp. Depends on you stuff but i usualy set my gain about 3/4 the way up, and the frequency little under 1/2 way..hope this helps good luck man