Features 1、Dedicated Inductor: The digital power amplifier board adopts special inductance for audio to ensure the sound is clear and powerful. 2、Good Heat Dissipation: Equipped with fan, and the heat dissipation area is large, which can better maintain long term operation. 3、Excellent Resistor: The high accuracy SMD resistor is selected to ensure a good signal to noise ratio of the whole machine. 4、2 Channel Design: Dual channel design power amplifier board has low interference and fast frequency response. 5、Multiple Usages: Usually used in home theaters, multimedia classrooms, small conference rooms or speaker equipment, etc. Specification Item Type: Digital Amplifier Board Material: PCB Frequency Response: 10Hz to 21KHz Number of Channels: 2 Output Power: 2 x 420W Output Impedance: 4-8Ω Package List 1 x Digital Amplifier Board