16. System A Previous Key.
Long press to decrease volume.
17. System A Next Key.
Long press to increase volume.
18. System play/pause key A.
19. Button light mode switch.
20. Front panel light mode.
21. Front panel light fire mode.
22. Front panel light switch.
23. Control panel lighting switch.
24. System headphone output (A).
25. Headphone output slot (A).
26. Headphone volume
27. Headphone output slot (B).
28. System B headphone output.
29. A-B system fader.
30. System display screen B.
31. Microphone input slot 1
32. System line input slot B.
33. System B USB input slot.
34. System B SD card slot.
35. Increase/decrease the volume of the microphone.
36. ECHO increase/decrease.
37. Frequency range of the subwoofer.
38. Subwoofer range volume.
39. System volume control B.
40. System B USB/SD card input key.
41. BT system input key (B).
42. System line input key B.
43. TWS system (B).
44. System B previous key.
Long press to decrease volume.
45. System B Next Key.
Long press to increase volume
46. System silence of the entire unit A-B.
47. System B play/pause key.