I bought a ZAPCO Reference 650.6 6 channel amp last year and never used it yet. Has anyone used these amps before? How do they sound in your opinion? I am trying to decide if I should keep it for my new truck or sell it. I never put it in my Toyota because it is so freakin long. This thing is almost 3 feet long. Anyway I was just wondering people opinions and want to hear peoples experiences. From the specs it looks like a kick azz amp but I have never heard one hooked up.