I am currently using a pioneer gm64oof to run my KS6.2 components. I am looking to upgrade to the QS line which are bi ampable and was looking for a better amp to run them. It seems my pioneer just gets too hot and I dont like the HPF being a static point at 80hz. I maybe wrong thats ywhy I'm here looking for opinions. Also I dont have a huge budget to spend somewhere under 250 to 300 wiould be doable but I am definately wanting a new amp nothing used sorry guys just too maany bad experiences with used equipment on this build.