Serious audiophiles know that it's the little things that make a big difference in car audio, and the Crunch 2-Channel Car Audio Amplifier and Mtx 12-Inch Dual-Loaded Subwoofer Enclosure delivers those precise details for unparalleled performance.This 2-channel amplifier has high-quality circuit and hardware designs along with exclusive technologies to improve quality and minimize distortion. Crunch Powerx incorporates full Class A/B technology in stereo and 4-channel amplifiers along with Class D in the mono. The Powerx line also includes Crunch technology like Quick Thermal Dispersion Technology which puts more aluminum on the heatsink than a normal amplifier.The Mtx TNE212D is a dual 12-inch sealed enclosure that has a single terminal cup showing a final 2-ohm load to any connected amplifier.