Feature: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 BoardMaterial: PCBInput Voltage: AC 24V±24V (Recommended Power Supply Voltage: AC24V-0-AC24V)Frequency Response: 10Hz to 21KHzNumber of Channels: 2Output Power: 2 x 420WOutput Impedance: 4-8Ω.Package List:1 x Digital Amplifier BoardNote:Do not overload to use.