Power it
Connect the included USB-C cable to a 5 V, 500 mA–2 A power source. Slide the power switch to ON.
Expected: the display and LEDs turn on.
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Oasis Plus 2Model TC500P2 · Bluetooth 5.31 2 3 Optical (recommended) AUX / 3.5 mm Only HDMI ARC? ON/OFF A / B OPT / AUX +/− OPT VOLUME RESET
EN
Interactive user guide · Oasis Plus 2
TV sound to your Bluetooth device.
Connect a TV or computer to one or two Bluetooth headphones, earbuds, speakers, or compatible Classic Bluetooth hearing aids.
Before you startOasis Plus 2 uses Classic Bluetooth. It does not support Auracast hearing aids, HDMI-only TVs, HDMI ARC/eARC input, Dolby, or DTS.
Oasis Plus 2Model TC500P2 · Bluetooth 5.3Start here
Connect the TV first.
Power Oasis Plus 2, choose the cable that matches your TV output, then set the TV audio correctly.
Choose one TV audio output
Look at the labels beside your TV ports. Match one output to the corresponding Oasis Plus 2 input.
Use only one audio cable. Optical is recommended when available.
Set TV audio
For Optical, select Optical output and set the digital audio format to PCM.
No sound? Dolby, DTS, Bitstream, or Auto can produce silence; use PCM.
Which cable should I use?
Find the matching output label on your TV. Do not connect to an input port.
OPTICAL
DIGITAL AUDIO OUT
Remove the clear tip covers. Connect TV Optical Out to Oasis Plus 2 OPTICAL INPUT FROM TV, then select OPT.DIGITAL AUDIO OUT
HEADPHONES
🎧
Connect TV Headphones / Audio Out to Oasis Plus 2 AUX INPUT FROM TV, then select AUX and raise the TV volume.🎧
HDMI
(ARC/eARC)
Oasis Plus 2 has no HDMI input. Use a compatible HDMI-to-Optical extractor such as HAX06.View HAX06 →(ARC/eARC)
Not sure? Send Support a clear photo of all TV ports and include the TV brand and model.
Set your TV to Optical + PCM
Select your TV brand for the exact menu path. Menu names can vary by model.
Open the full TV PCM guide →PAIR YOUR LISTENER
What do you want to hear through?
Oasis Plus 2 can pair with one or two Classic Bluetooth audio devices.
Headphones or earbuds
Turn off Bluetooth on nearby phones/tablets, then put the headphones into true pairing mode—not merely powered on.
AirPods
AirPods work through Classic Bluetooth. The case light must blink white before Oasis Plus 2 can find them.
Bluetooth speaker
The speaker must accept standard Bluetooth audio (A2DP) and be placed in pairing mode.
Pair headphones or earbuds
- Turn off Bluetooth on nearby devices that may reconnect to the headphones.
- Put the headphones in pairing mode. Look for the fast-blinking pattern stated by their manufacturer.
- Power on Oasis Plus 2. It enters pairing automatically; if needed, hold the pairing button for the A side for 2 seconds until its LED blinks green and white.
- Keep both devices within 1 m / 3 ft and wait.
Connected: the A-side LED becomes solid white and TV/computer audio plays.
Pair AirPods
- Turn off Bluetooth on the iPhone, iPad, or Mac that normally uses the AirPods.
- For AirPods 1/2/3 and Pro 1/2: put both earbuds in the open case and hold the rear setup button about 5 seconds until the case light blinks white.
- For AirPods 4 or Pro 3: open the case and double-tap the front until the light changes to blinking white.
- Hold the Oasis Plus 2 A-side pairing button for 2 seconds if its LED is not already blinking green and white.
Connected: the A-side LED becomes solid white.
Still flashing? Charge the AirPods/case, clear the previous connection if needed, and repeat with the devices within 1 m.
Pair a Bluetooth speaker
- Disconnect the speaker from nearby phones or computers.
- Put the speaker into Bluetooth pairing mode; confirm its pairing light or voice prompt.
- Hold the Oasis Plus 2 A-side pairing button for 2 seconds if needed.
- Keep both devices close and wait for the A-side LED to become solid white.
Important: Wi-Fi-only, AirPlay-only, Sonos network speakers, and passive speakers cannot pair directly.
MORE WAYS TO LISTEN
Choose what you need.
Use hearing aidsClassic Bluetooth models only
Oasis Plus 2 does not support Auracast hearing aids.
Phonak pairing guide →Adjust volumeTransmitter, remote, or audio source
- Use +/− or the remote.
- For AUX, also raise the TV volume.
- TV volume may not control Optical audio.
Use a soundbar tooOptical passthrough setup
TV OPT OUT → OASIS OPT IN
OASIS OPT OUT → SOUNDBAR OPT IN
OASIS OPT OUT → SOUNDBAR OPT IN
HDMI ARC/eARC needs a compatible extractor or an Optical connection.
Fix a problem
What is happening?
Choose the closest symptom. Each fix includes the expected result and next step.
Restore the audio signal
- Play a program on the TV/computer.
- Confirm the cable is connected to an output: Optical Out or Headphones/Audio Out.
- Set the Oasis Plus 2 input selector to OPT or AUX to match the cable.
- For Optical, set TV Digital Audio Format to PCM. For AUX, raise source volume.
- Check the OPT/AUX signal light.
Expected: OPT or AUX is solid, A/B is solid, and audio plays.
Signal light still flashing: the transmitter is not receiving usable audio. Try another TV program, reseat the cable, and open the official no-sound guide.
Restart pairing correctly
- Turn off Bluetooth on phones, tablets, computers, and TVs that may steal the connection.
- Put the listening device into pairing mode; confirm its fast-blinking light or pairing prompt.
- Hold the matching Oasis Plus 2 A/B pairing button for 2 seconds until it blinks green and white.
- Keep the devices within 1 m and wait up to 30 seconds.
- If it still fails, clear Oasis Plus 2 pairing history using the official reset guide, then pair again.
Expected: the matching A/B indicator becomes solid white.
Reduce lip-sync delay
- For best sync, use headphones that support aptX Adaptive or aptX Low Latency.
- AirPods use SBC/AAC rather than aptX Adaptive, so some delay may remain.
- Disable extra TV audio processing when available.
- Do not use two different wireless paths at once if synchronization is critical.
Expected: speech and picture move closer together.
Still delayed? Open the official audio-lag article for device-specific limits.
Reference
Buttons, lights, and official help.
Power switch
Slide to ON after USB-C power is connected. Slide to OFF to shut down.
Pairing and reconnect
Blinking green + white means pairing. Solid white means connected. Press to reconnect; hold to start pairing.
Audio signal
Solid means a valid input signal. Flashing means no usable signal—check the cable, input selector, playback, and PCM.
Volume buttons
Adjust transmitter output volume. The included remote provides the same convenient control.
Optical boost
Use the Optical volume/boost setting when Optical sound remains low. It does not affect AUX input.
Clear pairing history
Use the official factory-reset steps when old devices keep reconnecting or pairing repeatedly fails.
FIRMWARE UPDATE
Update Oasis Plus 2 when a fix or feature requires it.
Not part of normal setup. Update only when Avantree Support recommends it or a troubleshooting guide directs you here.
- 1Open the official firmware pageSelect Oasis Plus 2 / BTTC-500P2 and follow the provided download instructions.
- 2Connect Oasis Plus 2 to a Windows PCUse a USB data cable. A charge-only cable cannot transfer the update.
- 3Run the updateFollow the instructions provided with the firmware. Keep Oasis Plus 2 connected until completion, then restart it.
During the update: do not unplug Oasis Plus 2, close the update tool, or turn off the computer.
STILL NEED HELP?
Get the right help for Oasis Plus 2.
Choose Oasis Plus 2 / TC500P2. Include your TV/computer model, listening-device model, cable type, and the exact A/B and OPT/AUX light patterns.
RECOMMENDEDSubmit an Oasis Plus 2 support ticketThe form accepts photos and screenshots. A clear photo of the TV ports is especially useful.Start support request →
DON'T WANT TO SUBMIT A TICKET?
Talk to a real support agent.
PAIR YOUR HEADPHONES
Pair one or two Bluetooth listeners.
Keep Oasis Plus 2 and the headphones within 3 ft / 1 m while pairing.
STEP 1
Put your headphones in pairing mode.
Turn off Bluetooth on nearby phones and computers first. Simply turning headphones on is not enough.
Choose your headphones
Pairing instructions
✓
Success: the headphone or case light flashes rapidly.
STEP 2
Start pairing on Oasis Plus 2.
If side A is not already searching, hold the A-side pairing button for 2 seconds.
Green + white flashingSide A is searching
Keep the devices close
- Place the headphones within 3 ft / 1 m.
- Keep nearby phones and computers disconnected from them.
- Wait while both products search automatically.
Do not continue until side A becomes solid white.
STEP 3
Confirm the connection.
The connection completes automatically after both products enter pairing mode.
A-side solid whiteHeadphones connected
Test the result
- Play TV audio.
- Confirm OPT or AUX matches the connected TV cable.
- Raise the headphone volume.
✓
Success: audio plays through the first headphones.
Still flashing? Re-enter true headphone pairing mode, turn off nearby Bluetooth, then restart both products.
STEP 4
Add a second listener—optional.
Leave the first headphones connected while pairing the second set.
A and B solid whiteBoth listeners connected
Pair side B
- Put the second headphones in pairing mode.
- Hold the B-side pairing button for 2 seconds until B flashes green and white.
- Wait for B to become solid white.
✓
Success: both listeners hear the same TV audio.
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