Clarion APX290M 2/1 Channel 360 Watts Maximum Amplifier 360 Watts of Maximum Music Power 90W x 2 into 4 Ohms 20Hz - 50kHz @ &lt;.1%THD Dimensions 10-1/2" x 9-1/8" x 2-1/4" 180W x 2 into 2 Ohms 20Hz - 50kHz @ &lt;.1% THD Variable Bass Extender 0 - 15dB @ 45Hz