The amplifier uses a new original TPA3116D2 chip, which belongs to Class D operation, which is a high-quality analog amplifier and digital amplifier with high efficiency. Its output power is 50W according to the official document, but theoretically this production can achieve 100W*2. Features: 1.TPA3116D2 is a small digital amplifier chip, which highlights the advantages of digital chip. 2.Universal Compatibility - The amplifier board supports both AC and DC power supply with wide range of Dual 12-24V. So reliable. 3.High Output Power (2 * 50W) - Mono power up to 100W. 4.Distortion is significantly reduced, giving you a great hearing enjoyment. 5.100% brand new and high quality. Specifications: Product type: Digital Power Amplifier Board Chip: TPA3116 Input power: Dual 12-24V Output power: 100W*2 Impedance: 4-8Ω Number of channels: left and right channels Signal-to-noise ratio: 100dB Frequency Range: 14-100KHz Package List: 1 x Digital Power Amplifier Board Note: Because this chip is a digital chip, so its efficiency can reach over 90%, so it has the advantages of large power and low heat. It is recommended to use the switch power supply of 12-24v and over 100W. This end product can be used immediately. 1、TPA3116D2 is a small digital amplifier chip, which highlights the advantages of digital chip. 2、Universal Compatibility - The amplifier board supports both AC and DC power supply with wide range of Dual 12-24V. So reliable. 3、High Output Power (2 * 50W) - Mono power up to 100W. 4、Distortion is significantly reduced, giving you a great hearing enjoyment. 5、100% brand new and high quality.