Headphones Overview
Button Functions
| No. | Button | Function |
| ① | TV/OFF/Phone | - Switch to TV to connect to the transmitter - Switch to Phone for use as standard Bluetooth headphones - Switch to OFF to power off |
| ② | + / – | - Press or hold to increase or decrease volume. - Press and hold + and - together for 5 seconds to reset the headphones (Phone mode only). |
| ③ | Multi-function | - Press and hold for 3 seconds to enter pairing mode. - Press once to reconnect to the last paired Bluetooth device. - Press once to play/pause (Phone mode only). |
| ④ | EQ |
Press once to cycle between Balanced, Clear Voice, and Cinema Sound modes. Note: Cinema Sound is recommended for users with normal hearing. |
| ⑤ | Mute/Unmute | Switch to enable/disable mute function. |
LED Indicators
| No. | Indicator | Meaning |
| A | Flashing blue | Power on |
| Solid blue | Connected | |
| Flashing red & blue | Pairing mode | |
| Flashing red | Low battery | |
| Solid red | Charging | |
| Off | Fully charged or power off | |
| B | Solid orange | Mute function is enabled |
| Off | Mute function is disabled or power off |
Transmitter Overview
Button Functions
| No. | Button | Function |
| ⑥ | PAIR/ON/OFF | - Slide to ON/OFF to power the transmitter on or off. - Hold in PAIR position for 3 seconds to enter pairing mode. |
| ⑦ | Input Selector | Switch to match the audio input mode: • AUX • OPT • HDMI ARC |
| ⑧ | VOL Boost | +8dB higher when enabled. |
LED Indicators
| No. | Indicator | Meaning |
| C | Flashing blue | Power on |
| Solid Blue* | Connected | |
| Flashing red & blue | Pairing mode | |
| Green | Volume Boost function is enabled | |
| Red | Charging | |
| Off | Fully charged or power off | |
| D | Flashing white | No valid audio signal detected |
| Solid white* | Valid audio signal detected |
(*Starting with batch T24J1, the LED stays on for 2 minutes, then turns off.)
⚠️Important Notes:
• Please avoid using a TV or computer USB port, or a power bank for charging, as they may not provide sufficient power.
• 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.
• No sound from your headphones after setup? Troubleshooting guide here.
• Want to hear audio from multiple devices—like a soundbar, TV speakers, and headphones—at the same time? Check out this guide.
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