hi all my problem with this amp is anytime i increase the volume the amp will make a clicking sound until i decrease the volume and then it continues to play and anytime i try to adjust the gain settings on the amp it will make the same clicking sound also when i rest my hand on the amp it will make the same sound is my amp touch sensitive??. right now i have 1 12' imagedynamics sub 200rms and 4 pioneer 6x9 hooked up to it.i am using it in my home it is powered by a dc powersupply which is 12volt 5amperage total output power.I really dont know what is the problem is my amp failing on me any help would be appreciated..