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1.5V DC power port
2.2,3,4, and 5 are single-channel audio outlets. After volume
adjustment, channel i to channel 4 audio outlets are used
3.6 is the main audio input port
4.7 is stereo channel and mono channel selection. Press the
button to select stereo channel and press the button to select
mono channel
5.8,9,10, 11 are 1 to 4 audio output adjusting volume
potentiometers
6. 1 2 is the power indicator.
1.5V DC power port
2.2,3,4, and 5 are single-channel audio outlets. After volume
adjustment, channel i to channel 4 audio outlets are used
3.6 is the main audio input port
4.7 is stereo channel and mono channel selection. Press the
button to select stereo channel and press the button to select
mono channel
5.8,9,10, 11 are 1 to 4 audio output adjusting volume
potentiometers
6. 1 2 is the power indicator.