This has been a great amp for me, TONS of power. I ran an 8 ohm bridged load for 1200 watts, and never had to take the master past 2. Nothing wrong at all, and I think I still have the original box, manuals, etc. The 3 rackspace models seem much more sturdily built than the new line. I will also include the custom XLR splitter with the amp for running it bridged, for free. Never a bit of trouble, runs cool, and has enough power to harm things, should you decide to do so. $300 plus shipping on this one.