I just recently purchased Two Skar Audio 1500.1s from Kevin, just came in last week, but I need to run one single amp to save some space. Want to trade for 3.5k no less. Can add cash if it's reasonable. These have never been powered up, but I only have my iphone(no computer) so if you want pics, I can send them through text with username and all that! 405 519 3639.