2
In FM mode, this key is to search the audio automatically
4.
Last song/
（
Last radio when in FM mode
）
In USB and Bluetooth mode, press this key to switch to the “last song”,
In FM mode, press this key to switch to the “last radio”
In FM/Bluetooth/USB mode, long press this key to turn down the volume
5.
Next song/
（
Next radio when in FM mode
）
In U-disk and Bluetooth mode, press this key to switch to the “next song”
；
In FM mode, press this key to switch to the “next radio”
；
In FM/Bluetooth/USB mode, long press this key to turn up the volume
6.
Mode main function key
Bluetooth mode, USB mode, AUX input mode, FM mode can be switched
7.
MIC1 Input
This button has priority function. (MIC1-MIC2-Music)
8.
MIC1 volume adjustment
Adjust the volume of
MIC1
, turn clockwise to turn up, turn counter clockwise to turn down.
9.
MIC2/AUX2 volume adjustment
Adjust the volume of MIC2/AUX2, turn clockwise to turn up, turn counter clockwise to turn down.
10.
AUX1 volume adjustment
Adjust the volume of AUX1, turn clockwise to turn up, turn counter clockwise to turn down.
11.
Bass volume adjustment
The central position as the benchmark, turn counter clockwise to turn down the bass, turn clockwise to turn
up the bass
12.
Treble volume adjustment
The central position as the benchmark, turn counter clockwise to turn down the treble, turn clockwise to turn
up the treble
13.
Master volume adjustment
Adjust the level of all signals (except EMC), turn clockwise to turn up the volume, turn counter clockwise to
turn down the volume.
14.
power switch
Press “ON” to turn on the power, press “OFF” to close the power
15.
Level indicator
Audio output level display
