I have found my DD M3 to be extremely efficient...DD designed this amp to get class AB sound in a Class D package .....though rated at 2400 watts at 1 ohm...I've heard claims upto 3000 at 1 ohm.....I run my stock electrical with no big 3 on my Saleen...I updated the battery to a Batcap 2000 under the hood and one in the trunk...I have two runs of 1.0 ran one for gnd one for pos off the main battery...I ran the ground because the car is a Uni body...meaning no frame...and you need a good solid ground on any strong amp...trunk screws or self tappers cause Havoc on amps......My amp runs daily hard at 1 ohm...and I have zero light dimming....ftw //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif DD has an M2 I don't know if it is made like the M3...but it is rated at 1700 at 1 ohm and considerbly cheaper than a M3