Kenwood KAC-D8105, Dynamic Series Class D 5 Channel Car Amplifier, 1600W

Dual Sigma Drive This advanced negative feedback circuit improves damping factor and increases accuracy and sound quality. When a signal is passed to a subwoofer, like a 50Hz note, the speaker will move and create the note. However, because the speaker has mass and a suspension, it won't stop moving once it's in motion. This extra movement (sound) creates a type of distortion that's not part of the original signal. The negative feedback circuit senses this unwanted movement and sends out an opposite pulse to stop the speaker like an electronic brake. Expanded Frequency Response Supporting Hi-Res Audio, KAC-D8015 is ideal for high resolution audio playback as it features a frequency response that extends to 50kHz. | Number of Channels 5 Class D Peak Power Rating (Watts) 1600 RMS Power Rating (Watts x Channels) - 4 Ohms 50 x 4 300 x 1 RMS Power Rating (Watts x Channels) - 2 Ohms 75 x 4 500 x 1 RMS Power Rating (Watts x Channels) - 1 Ohm N/A RMS