Interactive user guide
Connect by Optical, HDMI ARC, or AUX, then listen together through the two included wireless headphones.
HDMI ARC · Optical · AUXAuracast · up to 35 hours
Recommended kit setup
TaskChoose the first available output below.
Use AUDIO OUT, not AUDIO IN. For HDMI, use ARC or eARC—not a standard HDMI port.
DoneThe matching TV port and cable are selected.
If notPhotograph all TV ports and the TV model label, then contact Support.
TaskConnect the cable selected in Step 01.
Using eARC? Turn eARC Off to get sound. See the next step.
No Bluetooth pairing needed. The headphones use the transmitter’s Auracast broadcast.
DonePower light on; both Optical plugs seated; selector at OPT.
If notCheck power, reseat both plugs, and match the Input Selector.
HDMI ARC mutes built-in speakers on most TVs.Soundbar + headphones? Use HAX06.How to connect →View HAX06 →
No PCM setting is needed.
DoneThe transmitter Audio Signal light is solid while TV audio plays.
If notRecheck the TV Sound Output and audio format before continuing.
TaskTurn on both headphones, wait for solid orange on each, then test TV sound.
Red + blue flashing? Hold ⏯ for 5 seconds until orange flashes rapidly; wait for solid orange.
No sound after resuming? Turn the transmitter OFF, then ON.
DoneSolid orange on both headphone LEDs and audible TV dialogue confirm setup.
If notChoose “No — help me fix it” above for the matching recovery.
Use the Duet Aura TV broadcast with compatible hearing aids or a receiver.
Before you start: Complete Steps 1–3, then keep the transmitter on and TV audio playing.
The transmitter LED beside Hearing Aids should be white.
Not white? Hold the transmitter’s Mode button for 3 seconds, then recheck.
Choose your hearing-aid brand and type, then follow the matching instructions to join the Duet Aura TV broadcast.
Open hearing-aid guide →DoneTV audio plays through your hearing aids.
If notConfirm the transmitter Audio Signal light is solid, then follow the selected brand or receiver guide.
Stop when the volume is comfortable and voices are clear.
Raise each headphone volume slowly.
Still too quiet? Switch Volume Boost ON on the transmitter for +6 dB. It works with Optical, HDMI ARC, and AUX.
Voices unclear? Select Voice Clear 2 on the headphones.
Using AUX? Raise the TV/source volume if needed.
Connect a headphone directly—do not pair the transmitter. To listen with both included headphones, use the transmitter setup.
This prevents the headphones from rejoining TV audio.
Hold the headphone switch at Pair with Phone for 3 seconds. Wait for red + blue flashing.
Open Bluetooth on the phone or computer and select Aria Aura.
A solid blue headphone LED means connected.
Back to TV: Turn off phone Bluetooth. Switch the headphones ON near the powered transmitter; wait for solid orange.
About 2.5 hours for a full charge.
Not charging? Reseat each headphone on the powered dock or reconnect its USB-C cable; check the power source.
Up to 35 hours of playtime. Actual time varies with volume, connection, and use.
Update only if Avantree Support tells you to, or this guide sends you here.
Use the included gray-tip data cable. On Mac, an Apple charging cable also works.
After updating: follow the updater’s reset instructions.
During the update: do not unplug the headphones, close the updater, or turn off the computer.
Private Mode uses an encrypted, password-protected Auracast broadcast.
The feature is not available yet. Once released, it will be added to the headphones through a DFU firmware update.
Use the open Duet Aura broadcast for normal TV listening. The headphone app is only needed for password-protected broadcasts.
