Kicker has an awesome d-class amp! I have a dx700 and it kicks! For a good deal on kicker and lots of other amps and car stuff try e-bay,' there's a store called "sell2all" FANTASTIC !!They have new and refurbs. Mine was a refurb straight from the factory w/warranty incl!- It pounds! I believe it retailed at $700 or $800 something and I got it at $160!It tested at 720 amps! Works excellent! Hope this helps, Sam