Jun 18, 2010 · For years, Brutus amplifiers have been recognized the world over as some of the best subwoofer amplifiers in their class. Hifonics newly designed Hifonics Brutus amplifiers are the most efficient and comprehensive Super D-Class series ever. "With the new vertical fin heat-sink design these amplifiers have better heat dissispation and therefore run more efficient resulting in less impact on a car's battery and charging system than many other amps available today."