Welcome to our store! 1、WORK PARAMETERS: Dual-channel stereo output ensures continuous serial power, THD ≤0.1%, with DC12-24V wide voltage output. 2、AUDIO OUTPUT: This power amplifier supports 50Wx2 left and right channels and 100W bass channel output, with encoder knob adjustment. 3、BLUETOOTH FUNCTION: This power amplifier features Bluetooth functionality, transmitting up to 49 feet in open environments, ensuring stable and reliable performance. 4、AUDIO INPUT: Supports AUX audio input with independent adjustment, and can also input audio signals via a 3.5mm headphone jack. 5、APP CONTROL: The amplifier board supports APP control for visual operation of playback mode, Bluetooth name change, password setting, and power-off prompt sound. 6、CIRCUIT PROTECTION: The power amplifier has overheating, reverse connection, overvoltage, and undervoltage protection, ensuring safe operation. Item Type: Power Amplifier Product Material: PCB Bluetooth Version: 5.1 Frequency Range: 20Hz-30KHz Signal-to-Noise Ratio: 92dB Power Supply: DC12-24V, 10A or higher Audio Channel: 2.1 channel Audio Output: Left and right channel, bass channel, 3.5mm interface stereo output Audio Input: Bluetooth, AUX, USB drive, USB sound card Power Output: 50W x 2 (left and right channel) + 100W (bass channel) Satellite Box (left and right channels) Compatible Speaker: 10W-100W, 4Ω -8Ω Bass Channel (Subwoofer) Compatible Speaker: 20W-200W, 2Ω-8Ω Volume Adjustment: High-end encoder knob adjustment for a smoother touch Protection: Static electricity, overvoltage, undervoltage, overheating, DC detection, short circuit protection APP: Supports YS Audio APP control Includes: 1 x Power Amplifier 1 x Top Cover 1 x Bottom Cover 5 x Buttons 1 x Screwdriver 1 x Heatsink 1 x Gasket 8 x M2x3mm Screws 4 x M2x4+3 Copper Pillars 4 x M2x18 Copper Pillars Satisfaction Guaranteed: Customer satisfaction is our top priority. If you encounter any issues with the product, please contact the seller immediately. We are committed to providing satisfactory after-sales service.