Kenwood X303-4

Class D 4-Channel Power Amplifier
 
Max Power 600W
RMS 50W x4 (4Ω)
RMS 75W x4 (2Ω)
Size (inch) (W) 8-3/8" x (H) 2-1/16" x (D) 5-7/8"
High-Resolution Audio Certified
Variable Low Pass Filter
Bass Boost