Bluetooth 5.0 Long Range Low Latency Transmitter Receiver
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$49.99
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Purchases from Avantree.com gets 2-year warranty
TRANSMITTER AND RECEIVER 2-IN-1 UNIT - Bluetooth-enable virtually any of your audio devices at home with this 2-in-1 transmitter/receiver unit. Use the Oasis B as a transmitter to stream audio from your TV/computer to a set of Bluetooth headphones or use it as a receiver and allow your home stereo/speakers to stream music from your cellphone.
NO LIP-SYNC DELAY - With AptX Low Latency codec support, the Oasis B pairs with other aptX LL products (such as the Avantree Aria Pro, Audition Pro, and Torpedo Plus) to virtually eliminate audio-visual lag. The Oasis B can also be paired with other Bluetooth products, but audio-lag may occur.
EXTENDED SIGNAL RANGE - Featuring Bluetooth Class I technology, our transmitter's signal reaches up to 164ft (50m) in open air, line-of-sight conditions and up to 50-70ft (20-30m) indoors. Please note that with all Bluetooth technology, range may be affected by physical obstructions, wireless interference, and supporting devices.
CONVENIENT BLUETOOTH / BYPASS SWITCH - Toggle between Bluetooth and Bypass mode with a simple switch! No need to re-plug your TV's only optical port every time you want to switch from your headphones to your stereo.
DUAL BLUETOOTH SUPPORT - Use two headphones or a Bluetooth soundbar with your headphone with the Oasis B! With dual Bluetooth support, the Oasis B can stream audio to two devices at once. (Wired stereos/soundbars connected through optical will need to use Bypass Mode.)
Avantree Oasis B (BTTC-500-W-D)
Micro USB power cable: 2.6ft (80cm)
Optical cable: 3.3ft (100cm)
3.5mm audio cable: 3.9ft (120cm)
3.5mm female to RCA male cable: 1ft (32.5cm)
User manual
Bluetooth 5.0 Long Range Low Latency Transmitter Receiver
Certified aptX Low Latency, Dual Link, Pass-Through Function
Bluetooth enable
No lip-sync delay
Extended range
Pass-through support
Multi format support
Bluetooth enable
Bluetooth-enable virtually any of your audio devices at home. Use Avantree Oasis B as a Transmitter to stream audio from your TV, or computer to a set of Bluetooth headphones. Or use Avantree Oasis B as a receiver and allow your home stereo or speakers to play streamed music from your cellphone or laptop. Connect Avantree Oasis B in between your TV and Sound bar - then use the convenient bypass switch to choose between your sound bar (bypass mode) and streamed Audio (Bluetooth mode) without the need to plug/unplug any wires.
Perfect for watching TV
Supports aptX Low Latency codec to virtually eliminate audio-visual lag making the Oasis B an ideal choice for watching TV / movies. For the best results, use with aptX Low Latency supporting headphones / speakers (ex. Avantree Aria, Audition Pro and Torpedo Plus).
Extended range
Featuring Bluetooth Class I technology, Avantree Oasis B has a working range of up to 164ft/50m! This gives you the ability to roam around the house freely while still maintaining a stable connection with your transmitter. Note: The working range of the Oasis Plus can be affected by physical onstructions or wireless interference.
Pass-through support
Use the BYPASS function if your TV only has ONE OPTICAL Output which is currently occupied by your AV receiver or soundbar. You may watch TV with soundbar at daytime while using Bluetooth headphone at midnight. Connect the Oasis B in between your TV and soundbar - then use the convenient bypass switch to choose between your soundbar (bypass mode) and streamed audio (Bluetooth mode) without the need to plug / unplug any wires.
Works with all TVs
The Oasis B can work with your TV, whether it's brand new or an older dated model. It's universally compatible with any TV that has optical, AUX/3.5mm or RCA audio output ports.
(New! USB-C Version) Bluetooth Over-Ear Headphones with Audio App for Your Own Personalized Custom Hearing Profile, Active Noise Cancelling, aptX LL, aptX HD
Audio delay when connected with TWO devices simutaneously (Dual Link)
Disclaimer：Please contact Avantree Support BEFORE upgrading. Be aware that if you upgrade without prior consultation with Avantree technical support and the product dead due to DFU misoperation, the warranty is not covered.
Step 1: Device Firmware Upgrade (DFU) File
Please download the upgrade firmware file to your computer noting the save path. Please note you can not open this file directly, just to save and choose when you upgrade.
4.Factory Reset (Clear pairing history!! Not only turn on / off) BOTH devices and try again.
5.If you tried all above but still cannot pair, there might be an unknown aggressive Bluetooth device in your environment. You may try the pairing process in a different location. If both devices are portable, take them into your car, drive a bit away from home, and use car cigarette lighter as the power source and pair them up.
Normally, if the transmitter / adapter leaves the pairing mode first, it indicates you have something else in the environment disturbing the pairing. Please clear pairing history of the transmitter or try from a different location)
If the Bluetooth headphone / speaker leaves the pairing mode first, it indicates previous paired device is not turned off. Please check the manual and clear the pairing history of the device.
If both devices stay in pairing mode for a long time but not connected, it is most likely caused by wi-fi interference.
If it is still not working, please submit the Cannot Pair Verification Form, and we will get back to you within 1 working day.
If you contact us via email, please try to provide the following images for quick diagnosis:
1. Photo of the transmitter box and headphone, both turned on with their LED lights (Solid Blue?)
2. Photo of TV Audio output ports & TV HDMI ports
3. Photo of TV Screen with Sound Settings page - with Digital Optical Out selected (if you use optical cable)
4. Photo of TV Screen with HDMI in & Out Audio Format both set to PCM
5. If you also have AV Receiver and Soundbar connected, please draw a simple diagram how you connect them and the audio signal flow. (Note: The following diagram is just for your reference, you can draw it by hand.)
Hearing audio through the TV speaker AND the headphones at the same time
If you'd like to get sound on both your TV speakers AND headphones at the same time, it DEPENDS on whether the TV is able to support getting sound out to two sources simultaneously. It is NOT related to the transmitter. The transmitter receieves the sound from your TV's output and streams it over to your Bluetooth headphones or speakers.
However, if you connect the transmitter to your TV via OPTICAL port and you can see the following options under the SOUND OUTPUT settings on your TV...
You can actually get sound simultaneously! Follow these steps:
Go to SOUND OUTPUT and change this to OPTICAL / EXTERNAL SPEAKER
Once there's sound going out into the headphones, go back to SOUND OUTPUT and change this back to TV SPEAKER
If your TV doesn't support simultaneous output to both the TV speakers and headphones, here are some alternative methods you can consider:
For Audio Transmitter Users:
Solution 1: Connect the Transmitter to a TV box / AV Receiver instead
If you have a TV box (DirecTV, Xfinity, Bluray Player, etc.), you should be able to find audio output ports on the back of them. Try to connect the Avantree transmitter directly here instead of the TV. This method essentially allows you to "go around" the TV's built-in speakers.
Con: will not work on streaming apps if you have a Smart TV or streaming device
For all users:
Solution 2: For users with TV Sondbar / AV Receiver
2.1 Use Transmitters with Passthrough Function
If you have a Soundbar or Stereo Receiver, check your transmitter to see if it supports passthrough. If not, you can return your current product and consider purchasing one of these: Orbit, Oasis Plus, Opera, Medley 6018, HT5009, HT5006, Duet, or Quartet.
Our industry leading "Passthrough" function allows you to put the transmitter/base between a TV and an external speaker and have audio come out from both devices AT THE SAME TIME.
2.2 Use Audio splitter/extractor
For AUX Output - Use an audio splitter (e.g. Avantree TR302) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is a 3.5mm audio splitter
For Optical AUDIO OUT - Use an optical splitter (e.g. J-Tech splitter) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an optical audio splitter.
For HDMI ARC OUT - Use an HDMI Audio Extractor (e.g. HAX05) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an ARC supported HDMI audio extractor.
Audio latency is, essentially, the time it takes for audio data to move from your audio source to your headphones. Wired headphones produce an imperceptible amount of lag—about 5-10ms worth. Within this 5-10ms window, your phone or computer processes the digital audio data, converts said data to an analog audio signal, and then streams the signal through your headphones or speakers.
Bluetooth devices spend a lot more time to do this “processing”. The source device compresses the data and wirelessly transmits it. Then the headphones or speakers receive the data and decompresses it.
The wireless communication program is called a “Codec”. It acts like a specific language that the sender and the receiver agree to communicate with. Different codecs lead to different audio delay times.
Bluetooth Audio Codec
Audio delay
aptX™ HD
≥ 250ms
aptX™ Low Latency
~ 40ms
aptX™
~ 70ms
FastStream
~ 40ms
SBC (Sub Band Codec)
~ 220ms
To benefit from the lowest amount of audio delay, BOTH the sender and the receiver must support either the aptX Low Latency or the Fast Stream Codec. If only one side supports aptX Low Latency but the other side does not, the streaming will use the next available codec supported by both devices, such as SBC or aptX. You will find that your Bluetooth audio and TV speaker audio are not in sync.
How do you confirm whether your Bluetooth headphones support the aptX Low Latency or FastStream codec? Simply check its specifications in its product listing or manual. Apple Headphones and nearly all true wireless earbuds do not support aptX Low Latency. Some headphones claim that they do, unless they are a reputable brand, you still need to double check from Certified aptX Low Latency device list from www.aptx.com.
There is another factor that you need to keep in mind regarding audio delay, which is Codec priority. Many Bluetooth devices have a Codec "priority" list, meaning that it prioritizes using some Codecs over others when connecting to other devices. For example, the DG80 Dongle's Codec priority goes like this: 1.FastStream, 2.aptX low latency, 3.aptX, 4.SBC. When connecting with other devices, the dongle will go through these codecs one by one until it finds one that is supported by the device it's connecting to.
Where this gets tricky is if you are connecting multiple devices to each other. Bluetooth devices will use the lowest common denominator supported by all devices, not necessarily the fastest codec. This can result to a slower codec being used, even though your headphones support a faster codec. Read more here.
If you suspect that this is an issue, a fix is to factory reset / clear the pairing history of the devices experiencing audio delay. This may fix the issue.
What if my headphone is not low latency supported? You have the following options:
