Features: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 12~24V4.With AUX audio input, it can be connected to a computer, mobile phone or CD5.Digital power amplifier, Peaks power 400W, can drive 1004Ohm speakers;6.Dual microphone input, adjustable reverberation; built-in Bluetooth wireless receiver and FM radio.Notice:Actual color may be slightly different from the image due to different monitor and light effectPlease allow 1-3cm deviation due to manual measurementDescription:How to connect with Bluetooth:1. Press the "Mode" button to switch the device to the Bluetooth state, turn on the Bluetooth mobile phone, search for the Bluetooth device with the mobile phone, search for the product, and then click the Bluetooth product name to connect. After the connection is complete, you can play music on your phone.notes:1. Some mobile phones will prompt you to enter the PIX code. You can set "0000" at this time (if the phone supports easy pairing function, you do not need to enter the PIN code)Radio function operation instructions:1. Hang up the radio antenna;2. Press the MODE button to switch to the radio state.3. Press the play button to search the entire channel, and then automatically select the station.4. Press the previous or nexts track to skip to the nexts or nexts stationnotes:1. The effect of the radio is not ideals, it is mainly used for radio, and then buy a professional radio.Power wiring instructions (please follow the instructions carefully to avoid unnecessary damage):1. The panel DC12V/24V interface can be connected to DC 12V or DC 24V, and the current requirement is greater than 3A (battery or adapter can be used);2. The AC 100-240V AC interface on the panel can be connected to the AC100V-240V AC power supply with a figure 8 power cord (do not touchs the circuit board after powering on to avoid electric shock).notes:1. The above boot method can be connected in any way and cannot be accessed at the same time.Wiring instructions:1. Connect the subwoofer: connect speakers with about 100 magnets or speakers with about 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:1. Before power-on test, please turn off the lower main volume. Then slowly increase the volume after booting. If the sound is choppy or hoarse and distorted while increasing the volume, the speaker and amplifier will not match. Use a smaller sound or change the packaging. The speaker has been used.includes:1*Power amplifier board1*remote control2*audio cable1*DC power cord