16. BASS: Move this button up or down repeatedly to repeatedly to
strengthen or lower the level of BASS.
17. TREBLE: Move this button up or down repeatedly to repeatedly to
strengthen or lower the level of TREBLE.
18. DISPLAY: Shows BLUE for Bluetooth mode, USB for USB mode, CARD
for CARD mode, LINE for AUX IN/OUT mode.
19. AUX OUT: Connect any audio or video devices connecting with the
Auxiliary output 3.5MM.
20. AUX IN / FM ANT: Connect any audio or video devices connecting with
the RCA or Auxiliary input 3.5MM. Also use this port to connect the FM
antenna cable (provided).
21. POWER: Select AC when connects to the Mains or DC for battery use.
OFF to power off the unit.
22. AC POWER SOCKET: Connect the AC power plug to the power supply
outlet.
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