Kyyslb Amplifier Board, DC12 - 18v 15w*2 4-8 ohm, Class A & Class B Amplifier Board, bluetooth 5.0, DIY BoardFeature:Kyyslb-Amplifier BoardFeatures:Large heat dissipation area can better maintain long-term operationThe main circuit adopts high-precision resistors with an accuracy of ± 1%, which ensures a good signal-to-noise ratio of the whole machine. The resistors use precision chip resistors to ensure a good signal-to-noise ratio of the entire machine. Specification:Amplifier Type: Class A & Class BTamp Type: Amplify SoundChip Model: tda7297Bluetooth Version: 5.0Power Supply Voltage: CondensationNumber of Channels: Stereo * 2Output Power: 15w*2Output Impedance: 4-8 ohmsWorking Temperature: 0-70Package Included:Board bluetooth Digital Amplifier*1