Harmony A1 - Buttons, Indicators & Function Table – Avantree Support

Speaker Overview

Button Functions

No.	Button	Function
①	Power	- Press & hold for 2 seconds to power the speaker on or off
②	M	- Double-click to switch between Auracast Broadcasting and Bluetooth mode - Press & hold for 5 seconds to enter pairing mode
③	EQ	- Press to switch EQ modes: Vocal (white) / Pop (green) / Bass (blue)
④	+ / -	- Press or hold to increase or decrease volume - Press & hold + and - together for 5 seconds to reset the speakers
⑤	▷	- Press once to enable or disable mute (Auracast Broadcasting mode) - Press once to play or pause audio (Bluetooth mode) - Press once to answer or end a call

LED Indicators

No.	Indicator	Meaning
A	Solid white	Power on
	Flashing red	Low battery
	Solid red	Charging
	Off	Fully charged or power off
B	Solid blue	Connected (Bluetooth mode)
	Flashing red & blue	Pairing mode (Bluetooth mode)
	Solid orange	Audio received (Auracast Broadcasting mode)
	Flashing orange quickly	No audio received (Auracast Broadcasting mode)
C	White	Balanced mode
	Green	Voice Clear mode
	Blue	Bass mode

Transmitter Overview

Button Functions

No.	Button	Function
⑥	ON / OFF	Slide to turn the transmitter ON / OFF
⑦	Phone / Pair	- Press to select Phone input - Press & hold for 4 seconds to enter Bluetooth pairing mode (Phone mode only)
⑧	AUX / OPT	Press to toggle between AUX and OPT inputs
⑨	+ / –	Press or hold to adjust the volume

LED Indicators

No.	Indicator	Meaning
D	Solid blue	Connected
D	Flashing red & blue	Pairing mode
E	Flashing red	Current sound mode is in use
E	Solid white	Audio input is detected
F	Auracast	Auracast Broadcasting (Auracast mode active)

⚠️Important Note:
•When using your Avantree transmitter with a TV in Optical or HDMI ARC mode, it is essential to set your TV’s Digital Output Audio Format to PCM (Pulse-Code Modulation) to avoid audio issues. Find out more here.