Sell ♙❒Digital Bluetooth Stereo Amplifier Board Subwoofer Dual Microphone Karaoke best price

Feature: 1. Support reading MP3 songs in TF card and U disk; 2. Support independent adjustment of treble, bass and main volume; 3. Working voltage: AC 220V or DC 12~24V 4. With AUX audio input, it can be connected to a computer, mobile phone or CD 5. Digital power amplifier, peak power 400W, can drive 4Ohm 100 electromagnetic speakers; 6. Dual microphone input, adjustable reverberation; built-in Bluetooth wireless receiver and FM radio. More about: 1. How to connect Bluetooth: Press the "Mode" button to set the device to the Bluetooth state, turn on the Bluetooth of the mobile phone, search for Bluetooth devices with the mobile phone, search for the product, and then click the Bluetooth name of the product to connect. After the connection is complete, you can play music on your phone. Notes: Some phones will ask you to enter the PIX code. You can enter "0000" at this time (if the phone supports the simple pairing function, you do not need to enter a PIN) (2) Operation instructions for radio functions: 1. Hang up the radio antenna; 2. Press the MODE button to enter the radio state; 3. Press the play button to search the entire channel and automatically save the station. 4. Press the previous or next track to switch to the next or next station notes: The effect of the radio is not ideal, especially for the radio, please buy a professional radio. (3) Power wiring instructions (please follow the instructions carefully to avoid unnecessary damage): 1. The panel DC12V / 24V can work on DC 12V or DC 24V, and the current requirement is greater than 3A (battery or power available); 2. The panel AC 100-240V can be switched to AC 100V-240V AC power with a figure of 8 power cord (please do not touch the board after power on to avoid electric shock). notes: The above boot method can be connected in any way and cannot be accessed at the same time. (4) Wiring instructions: 1. Connect the subwoofer: connect speakers with more than 100 magnets or speakers with more than 100W: 2. Connect the tweeter: you can connect the 30W tweeter (or disconnect it) (add a capacitor when connecting the tweeter) 3. Suitable for 8-12 inch speakers. Notes: Please turn off the lower main volume before starting the test. Then slowly increase the volume after booting. If the sound is intermittent or hoarse and distorted while increasing the volume, the speaker and amplifier are not matched. Please use a small voice or change the packaging. Use speakers. (5) Package includes: 1pc AC 220V 12v 24v digital bluetooth stereo amplifier board 1 remote control 2 audio cables 1 DC power cord