i finally decided to dick around with my amp tonight i was going through the list and went in "input" category in there was "level" which could be adjusted from 0 db and down and "gain" that went up or down 6db at a time amp is MRD m1001 hooked up to a type r 12 for 500 watts at 4 ohms i have the level at 0 and the gain at +6 i thought one of these were to match your HU input voltage? can someone fill me in on how to do this