EVOLUTION series is the new High End Flux Amplifier, designed for the enthusiast car audio lovers. Available as EVO 100.4 and EVO 150.4 both is four-channel amplifier, has fully configurable and entirely manageable feature.EVO-100.4 4 Channel Amplifier Rated Power output: 100 W x 4 Ch @ 4 ohm.200 W x 4 Ch @ 2 ohm. Frequency Response: 10-20 KHz. Low Pass Crossover: 40-400 Hz. High Pass Crossover: 40-400 Hz. Size: 354 mm (L) x 52mm(H) x 178 mm (W).