Behringer NX6000 Class-D 6000W Power Amplifier W/Smartsense The NX6000 power amplifier packs 6000 Watts (2 x 3000 Watts @ 4 Ohms; 2 x 1600 Watts @ 8 Ohms) into an exceptionally lightweight (13 lbs / 5.9 kg) and rack-mountable package. And because the NX6000 is so much more efficient than conventional designs, it runs cooler and doesn’t require the massive heat sinks and heavy toroid transformers typically associated with its conventional counterparts. Thanks to Nehringer's “Zero-Attack” limiters that offer maximum output level with exceptionally-reliable overload protection and SmartSense Loudspeaker impedance compensation, which provides fully linear frequency response at any speaker load impedance, you can run the NX6000 full-out for hours on-end. Behringer's revolutionary high-density Class-D technology, combined with an ultra-efficient, switch-mode power supply ensure this feather-light powerhouse will drive your rig effortlessly for many years to come.