Features: High power bluetooth-compatible amplifier board: With high power output capability and 2.1 channel configuration, it can provide powerful audioed drive force for audioed equipment. Microphone Audioed Integrated Machine: It integrates amplifier board and microphone functions, making it convenient for users to input voice and play sound, meeting various needs. Quality sound effects: Using TPA3116D2 amplifier chip, providing high fidelities sound quality, restoring the details and dynamic ranges of music. Bluetooth-compatible wireless connection: Support bluetooth-compatible wireless connection, allowing audioed source devices to wirelessly transmit audioed signals, making it convenient to operate and use. Multiple input interfaces: Supports multiple audioed input methods, including bluetooth-compatible, AUX, USB, etc., to meet the connection needs of different audioed source devices. Specifications: Material: PCB+Plastic Size: Approx. 135x1.6x25mm/5.31x4.17x0.98inch Model: YS-AM100 Bluetooth-compatible version: BLE5.1 Name: 50Wx2+100W microphone audioed all-in-one machine Power amplifier chip: TPA3116D2 Bluetooth-compatible transmission distance: 15meters Audioed input: Bluetooth-compatible+AUX+USB flash drive+USB sound card+MIC Audioed output: Left channel 50W+Right channel 50W+Subwoofer 100W Adapted power supply: DC12-24V, ≥ 8A (cannot be connected to alternating current power) Adapted speaker: 20-50W left and right channels, 4-8Ω; Subwoofer 20-100W Protections mechanism: Input anti reverse connection, over temperature, over current, short circuit, anti-statical protections Special feature: Double microphone input. Support modify Bluetooth-compatible name, password settings, Sound volume adjustment, on off prompt sound, sleep assist song, firmware upgraded, etc Package Includes: 1 Piece YS-AM100 KTV High-power Bluetooth-compatible Amplifier Board Kit note: Please allow 1-2cm errors due to manual measurement.