Need an amplifier that is built to last? Go for Diamond Audio D600.1. The Diamond D600.1 mono sub amplifier sends up to 600 watts RMS of clean, pure musical power to your subwoofer, with no audible colouration or distortion. This mono powerhouse loves a 1-ohm load, so it will work well in a wide variety of sub systems. The D600.1 can be strapped with a second D600.1 to achieve a very respectable 1,200 watts RMS at 2 ohms, a cool feature if you are building your system in steps. The focussed mass heatsink draws heat away efficiently by attaching 75% of its mass directly to the components that create the most heat. The amplifier's output transistors also mount to the heatsink using a special system that provides better heat flow than commonly used clips. The D600.1 features variable low-pass and subsonic filters, a bass boost, and a phase switch so you can tune your sub system to sound its best. A pair of preamp outputs makes it easier to add more amplifiers when you want, without having to run a new RCA cable to the receiver. The D600.1 comes with a remote level controller, so you can adjust the amount of bass from the front seat.