4CH Amplifier With MOSFET Power Supply Thermal,Overload,Short Protection 4CH Amplifier With MOSFET Power Supply Power Output RMS power ohmTHD<0.2% S/N RATIO>85dB low pass frequency:40Hz--160Hzhigh pass frequency:40Hz--600HzThermal,Overload,Short Protection Nickle Plated RCA &Speaker Terminals Dimensions[LxWxH]:362x262x55mm Boss Electronics 4CH MOSFET Amplifier