ITEM NAME:Bluetooth Subwoofer Amplifier Audio Board Microphone Bluetooth Power Amplif Y5N9 Bluetooth Subwoofer Amplifier Audio Board Microphone Bluetooth Power Amplif Y5N9 Product model: MW-C750 Panel size: 134mm*82mm Installation size: 102mm*62mm Core functions: card remote control + LED display + FM radio + power off memory + loop playback + built-in Bluetooth function Input power: DC DC 12VGreater than10A Output power: maximum 450W rated 300W for 100W Output impedance: 4 ohms 8 ohms Speaker configuration: 6 inches - 12 inches 80 Hz - 120 Hz 20 cores - 35 cores Colour: Black Material: Aluminum alloy Includes: 1 * power amplifier board