Synco MC4 Benutzerhandbuch Seite 10

18. MP3 master control
[>||] Short press to pause/play; long press to switch to recording state, and record
the output signal of main channel to USB storage.
[|<<] Short press for last song; long press to reduce the volume.
[>>|] Short press for next song, long press to increase the volume.
[MODE] Short press to switch the working status among LINE/BT/PC; long press for
loop playback mode.
19. MP3 display
Indicate the operation and playback status of MP3.
20. MP3 USB jack
21. Stereo output interface
22. Recording terminal
The group of ports are used for main output connection of stereo and recording
interface.
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