1.LED screen
2.MP3 player control
MODE: USB/TF/SD/BT/FM convertor
:Play/Pause
:previous song
:next song
REC:Record button or Record playback button
3.TF Port.
Plug the TF disk in this area
4.USB Port.
Plug the USB disk in this area
5.Main volume control
6.3.5mm line input
7.Bass control for low frequencies
8.Treble control for high frequencies
9.ECHO control
10.Mic volume control
11.DC 15V in
12.Mic1 input jack
13.RCA phono(R+L) Aux in
14.External 12V battery interface
15.Mic treble control
16.Mic bass control
17.Guitar volume control
18.Guitar input jack
19.Mic2 input jack
20.AC IN 100-240VAC 50/60Hz
21.Main power switch
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