1, 100W * 4, 4 channels car amplifier 2, Class-AB Technology for high power output. 3, Frequency response: 5HZ ... 95Khz Specification : 1, Channel : 4 ClASS AB 2, voltage: DC 10.5-16 V3, Frequency response ... ( L*W*H ) mm : 390*210*5815. Weight : 4.5kg Car Amplifier