Up for sale is a Resonant Engineering 35.1d. I originally bought this from bumpin_blazer nearly a year ago and never got a chance to use it because i never bought a sub that could handle it. You probably know what it's rated at but here it is:500@4ohm, 1000@2ohm, 1600@1ohm, and 1800@.5ohm although it's not stable at that. I only tested it once and it worked flawlessly. I can send pics via e-mail to anybody actually interested. $340 shipped anywhere is the US. The only flaws are the scratches around the 4 mounting holes from the screws. Money orders only. E-mail me with any questions.
