1、This amplifier board adopts TPA3118 as the main chip, supply voltage range 10-24VDC. 2、Using 2 ohm sound equipment can reach 60W output under 24V power supply. 3、The circuit uses PBTL mode to achieve low resistance and high power. 4、You can parallel high internal resistance sound equipment to get high power output. 5、Widely used for TVs, monitors, laptops, portable speakers, DVD players ,etc. Features: 1. This amplifier board adopts TPA3118 as the main chip, supply voltage range 10-24VDC. 2. Using 2 ohm sound equipment can reach 60W output under 24V power supply. 3. The circuit uses PBTL mode to achieve low resistance and high power. 4. You can parallel high internal resistance sound equipment to get high power output. 5. Widely used for TVs, monitors, laptops, portable speakers, DVD players ,etc. Specification: Model: XR-M311 Amplification type: Class D Work efficiency: 93% Chip Type: TPA3118 Supply voltage: DC10-24V Input current: 3A recommended Output power: 60W*1 Frequency response range: 35Hz-88kHz Number of channels: Mono Impedance matching: 2-6 ohm Size: 55*40*15mm / 2.16*1.57*0.59in Weight: Approx. 30g/1.06oz Package List: 1 * Digital Amplifier Board Note: 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding.