Kenwood KAC-6407, 4/3/2 Channel Full Range Car Amplifier, 550W

Max Power : 550W RMS Power : 40W x 4 (4Ω) / 60W x 4 (2Ω) / 130W x 2 (Bridged) (W)13-3/16" x (H)2-3/16" x (D)8-1/16"Low Pass Filter : 50 - 200 Hz (-24 dB / oct.)High Pass Filter : 80 Hz (-12 dB / oct.)Speaker Level InputSignal Sensing Turn-on | Number of Channels 4 Class AB Peak Power Rating (Watts) RMS Power Rating (Watts x Channels) - 4 Ohms 40 x 4 RMS Power Rating (Watts x Channels) - 2 Ohms 60 x 4 RMS Power Rating (Watts x Channels) - 1 Ohm N/A RMS Power Rating - Bridged 130 x 2 Minimum Impedance Unbridged (Ohms) 2 Minimum Impedance Bridged (Ohms) 4 THD at Rated RMS Power 1% Bulit-in Crossover - Low Pass Yes Built-in Crossover - High Pass Yes High Pass Crossover Frequency (Hz) 80hz Low Pass Crossover Frequency (Hz) 50-200hz Signal-to-Noise Ratio 80dB Bass Boost No Bass Remote Included No Fuse Rating 30A CEA-2006 Compliant Maximum Power Wire Gauge Size Warranty 1 Year