Hello all I just got a DD M1D amp and the gain is set really high like 3/4 of the way up. I had a Memphis VIV 1100 before this and it was only below half and sounded great. I have 2 DD 610’s D4 hooked up to 1 ohm. I’m getting 13 volts to the amp. I’m using a 4 gauge wire with a 100 fuse amp. Do I need to upgrade to a 1/0 OFC with a 250 fuse? I just bought a new rca cable. I’m confused on why the gain is so high compared to the Memphis with only 1100 watts.