I have a concept cd-2410 it's rated at 2410 rms at 1 ohm. People have dropped this model amp down to .5 on some music and .35 for burps I my self have not dropped it below 1 ohm. Its considered probally the best amp concept has made for there big mono amps. It has a llttle scratches on the crome not bad at all I can email pics to you my email is aos1989@comcast.net just hit me up I can also pm reference's for people who are really intrested.
