1. Ngwaahịa gafereview
The Avantree Oasis Plus 2 is a Bluetooth 5.3 transmitter designed for wirelessly streaming TV audio to Bluetooth headphones or speakers. It supports connecting up to two headphones simultaneously and features optical passthrough for soundbars.
Ihe ngwugwu 1.1
- Oasis Plus 2 Transmitter
- Njikwa anya
- Ngwa anya Audio USB
- AUX 3.5mm Audio USB
- Ụdị C ike USB
1.2 Nhazi ngwaọrụ
The transmitter features various ports and controls for easy operation.
- Ike mgba ọkụ: Located on the right side of the transmitter.
- Volume Boost Switch: Located on the left side, allows for boosting optical volume.
- Ihe ngosi LED: On the front panel, these show input status (OPT/AUX), codec status (AD/LL/APTX/SBC), and connection status for two headphones.
- Bọtịnụ njikọta: Two buttons for pairing up to two pairs of headphones.
- Bọtịnụ mmezi olu: Plus (+) and Minus (-) buttons for adjusting volume.
- ọdụ ụgbọ mmiri ntinye ọdịyo: Optical and AUX ports for connecting to your TV.
- Ọdụ ụgbọ mmiri mmepụta ihe: Optical and AUX ports for passthrough to a soundbar.
- Ike Port: USB Type-C port for power input.

Image: Avantree Oasis Plus 2 Bluetooth Transmitter with its remote control.
2. Nhazi
2.1 Powering the Transmitter
- Connect the provided Type C power cable to the transmitter's DC IN port.
- Plug the other end of the power cable into a USB port on your TV or a wall outlet using a wall adapter (not included).
- Slide the power switch on the right side of the transmitter to the "ON" position.
- If powered via your TV, the transmitter will automatically turn on and off with the TV.
2.2 Ijikọ na TV gị
The Oasis Plus 2 supports Optical (SPDIF) and AUX (3.5mm) audio inputs. Optical is recommended for the best sound quality.

Image: Diagram showing the Optical and AUX input/output ports on the Avantree Oasis Plus 2 transmitter.
Option 1: Optical Connection (Recommended)
- Plug one end of the provided optical audio cable into the transmitter's "OPTICAL" input port (Input From TV section).
- Plug the other end into your TV's "OPTICAL DIGITAL AUDIO OUT" port.
- Using your TV remote, navigate to your TV's audio settings:
- Gaa na Settings > Sound > Sound Output ma họrọ "Optical Out / Audio Out".
- Then, change the TV's audio format to "PCM" ma hụ Dolby is turned OFF.
Nhọrọ 2: Njikọ AUX
- Plug one end of the provided AUX 3.5mm audio cable into the transmitter's "AUX" input port (Input From TV section).
- Plug the other end into your TV's "AUDIO OUT / H/P OUT" (3.5mm) port.
- Using your TV remote, navigate to your TV's audio settings:
- Gaa na Settings > Sound > Sound Output ma họrọ "Headset / External Speaker".
Option 3: RCA Connection (using AUX cable and RCA adapter)
- First, plug the provided RCA adapter into the AUX cable.
- Plug the AUX cable into the transmitter's "AUX IN" port (Input From TV section).
- Then plug the connected RCA cable into your TV's red and white "AUDIO OUT" ports.
2.3 Pairing Headphones
- Ensure the Oasis Plus 2 transmitter is powered on.
- On first use, the transmitter will automatically enter pairing mode. For subsequent pairing, press and hold the "1" button on the transmitter until its LED flashes green and white alternately.
- Put your Bluetooth headphones into pairing mode. Consult your headphone's user manual for specific instructions.
- Keep the headphones close to the transmitter. After a few seconds, they should automatically connect. The transmitter's "1" LED will turn solid white to indicate a successful connection.
- Ihe ndetu dị mkpa: Some smart TVs may automatically scan for and try to pair with Bluetooth devices. If your TV prompts to connect to the Oasis Plus 2 or your headphones, always select "Deny" to prevent interference with the transmitter's connection.

Image: The Avantree Oasis Plus 2 transmitter demonstrating its dual link capability, connecting to two pairs of headphones simultaneously for shared listening.
3. Ntuziaka ọrụ
3.1 Connecting a Second Pair of Headphones (Dual Link)
The Oasis Plus 2 supports connecting two pairs of Bluetooth headphones simultaneously, allowing two listeners to enjoy TV audio together at their own volumes.
- While the first pair of headphones is connected to the transmitter, press and hold the "2" button on the front of the transmitter until its LED flashes white and green alternately.
- Put your second pair of Bluetooth headphones into pairing mode.
- Keep the second pair of headphones close to the transmitter. They will automatically connect. The transmitter's "2" LED will turn solid white to indicate a successful connection.
3.2 Remote Volume Control
Adjust TV audio volume easily using the buttons on the transmitter or the included remote control without changing your TV settings.
- Pịa "+" button on the remote or transmitter to increase volume.
- Pịa "-" button on the remote or transmitter to decrease volume.

Image: The Avantree Oasis Plus 2 remote control, showing volume up and down buttons, ideal for adjusting audio from a distance.
3.3 Optical Passthrough Support
With Optical passthrough, TV audio can play through an OPT soundbar and Bluetooth headphones simultaneously. HDMI ARC / eARC passthrough is NOT supported.
- To use this feature, plug an additional optical or AUX cable into the correlating output port in the transmitter's "Output To Speaker" section.
- Plug the other end of this cable into your external sound system (soundbar or stereo AVR).
- Mara: You must use the same cable type for connecting the transmitter to the TV and the soundbar. For example, if you used an optical cable to connect the transmitter to the TV, you must also use an optical cable to connect the transmitter to your soundbar.

Image: The Avantree Oasis Plus 2 connected to a TV and a soundbar, illustrating how audio can be simultaneously passed through to the soundbar and streamed to headphones.
3.4 Boosted Volumes
The Oasis Plus 2 offers boosted volumes of up to +6dB to help offset fixed output volumes when using optical connections, ensuring a comfortable listening experience.

Image: The Avantree Oasis Plus 2 transmitter displaying a "+6dB" indicator, highlighting its boosted volume capability.
4. Nlekọta
To ensure the longevity and optimal performance of your Avantree Oasis Plus 2, please follow these maintenance guidelines:
- Avoid exposure to extreme temperatures and humidity.
- Atụpụla batrị na ọkụ.
- Debe ngwaọrụ ahụ ọcha na enweghị ntụ. Jiri akwa dị nro, kpọrọ nkụ maka nhicha.
- Anwala ịkwasa ma ọ bụ rụkwaa ngwaọrụ n'onwe gị. Rụtụ aka na ndị ọrụ ruru eru maka nrụzi ọ bụla.
5. Nchọpụta nsogbu
5.1 Reconnecting Headphones
Typically, you won't need to re-pair your headphones with the Oasis Plus 2 every time, as they should automatically reconnect when both devices are turned on. If they don't, here are a few things you can try:
- Solution 1: Disconnect from Other Devices. Make sure your headphones aren't already connected to something else, like your phone or computer. You can turn those devices' Bluetooth off, manually disconnect, or move out of range from them.
- Solution 2: Initiate Reconnection (Transmitter). If they still don't connect, press the Oasis Plus 2's pairing button (either "1" or "2" depending on which headphone you're trying to reconnect) once to manually initiate the reconnection process.
- Solution 3: Initiate Reconnection (Headphones). The last thing you can try is initiating reconnection on your headphones as well. You can check your headphone's user manual for directions on how to do this if necessary.
5.2 ndetu ndakọrịta
- Connects directly to your TV via Optical (SPDIF) or AUX.
- NOT compatible with HDMI-only TVs, HDMI ARC / eARC, or AV receivers.
- Transmits to Bluetooth headphones or Bluetooth speakers.
- NOT for Hearing Aids (does not support Auracast). For hearing aid use, consider Avantree Oasis Aura.

Image: A compatibility checklist for the Avantree Oasis Plus 2, detailing TV connection requirements, supported connections, and soundbar passthrough limitations.
6. Nkọwapụta
| Njirimara | Nkọwa |
|---|---|
| Nọmba nlereanya | BTTC-500P |
| Akụkụ ngwugwu | 7.01 x 5.47 x 1.34 sentimita asatọ |
| Ibu Ibu | 10.5 ounces (0.3 Kilogram) |
| Teknụzụ Njikọta | Bluetooth |
| Isi Iyi Ike | Igwe ọkụ eletrik |
| Atụmatụ pụrụ iche | Supports Two Headphones, Optical Audio Passthrough, Easy Volume Control |
| Ntinye Interface mmadụ | Bọtịnụ |
| Agba | Nwa |
| Batrị | 9V batteries required (included) |
7. Akwụkwọ ikike na nkwado
Avantree products are designed for quality and reliability. For any questions, technical assistance, or warranty claims, please contact Avantree customer support. Their friendly customer service and technical support team are available to assist you, including scheduling comprehensive phone consultations if needed.
For more information and support, please visit the official Avantree websaịtị ma ọ bụ rụtụ aka na nkọwa kọntaktị enyere na nkwakọ ngwaahịa gị.
8. Ozi nchekwa dị mkpa
Please read and follow all safety instructions to prevent damage to the device or personal injury:
- Avoid exposure to extreme temperatures and humidity.
- Atụpụla batrị na ọkụ.
- May interfere with other wireless devices if not used properly.
- Debe ebe ụmụaka na-apụghị iru.
- Do not use the device near water or in wet conditions.
9. Official Product Video Guide
For a visual guide on setting up and using your Avantree Oasis Plus 2, please watch the official user guide video below. This video covers product overview, connecting to your TV, listening with a soundbar, adding more headphones, and reconnecting.
Video: Official User Guide for Avantree Oasis Plus 2 Bluetooth TV Transmitter. This video provides a comprehensive walkthrough of the product's features, setup process, and usage scenarios, including connecting to a TV, pairing headphones, and utilizing soundbar passthrough.