Avantree Oasis Plus Certified aptX HD Bluetooth 5.0 Transmitter & Receiver

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Product Info

Bluetooth Transmitter
Use as a Bluetooth TRANSMITTER to Bluetooth-enable your TV, AV Receiver, Radio and other home audio devices to stream music to your Bluetooth headphones or speakers.


Bluetooth Receiver
Use as a Bluetooth RECEIVER, to Bluetooth-enable your home stereo or AV Receiver to receive wirelessly streamed music from your cellphone or PC.


Bypass Mode
If you have only ONE OPTICAL Output from TV, and it is currently used by your AV receiver or soundbar, you need to use the BYPASS function. What’s more, your family can enjoy TV via Bluetooth headphones and a wired speaker simultaneously with independent volume control.


Supports aptX HD both as a Transmitter or Receiver


Standard CD quality is 16bit.
Using aptX-HD wirelessly stream 24bit music quality for a ‘better-than-CD’ listening experience.

NOTE: Slide HD / LL Priority switch to HD side. Works with any aptX-HD Bluetooth headphones (e.g. Avantree Alto Clair ) or cell phones, to stream audio in high definition, allowing you to pick up on all the details and nuances in your favourite music.




Qualcomm APTX HD Audio ensures compatible Bluetooth devices deliver high definition (HD) Audio. It preserves sound data throughout the Audio transmission, resulting in a ‘better-than-cd’ listening experience. Simple switch to alternate between HD and low latency priority If your device supports both codecs.


Simultaneously stream audio to 2 headphones or speakers with no delay while watching TV, movies or gaming. Note: 1. Not recommended to use dual link with TWS earbuds. 2. To achieve low latency (<40ms delay ) receiving device (headphones / speaker) must also support APTX Low Latency or you may experience a 70-220ms delay. You can check your device compatibility on the APTX official website.



Even if your TV only has one Optical port, connect the Oasis Plus between your TV and Soundbar - then play audio from your soundbar and stream to your headphones simultaneously. This is a unique product Feature! It even supports independent device volume control. Easily choose between Bluetooth mode (wireless) and bypass mode (wired) with the Flip of a switch, without the need to plug / unplug any wires.


Experience Wireless freedom to walk anywhere in the house! Proven range of 295ft in testing with headphones (audition Pro), and 328ft using two Oasis Plus units as a Transmitter/ receiver Pair in open air line-of-sight conditions. Note that the operating range can be affected by multiple factors (see Faq1 below)


It supports full-featured voice guidance and status / codec indicators, making it incredibly easy to set up and use. Re-connects quickly to the last device. Supports Digital optical / AUX / RCA Audio output standards making it compatible with 99% of the TVs on the market. On board volume adjust function can be used for many devices that do not have their own volume controls (E. G. Airpods).


This is a 164FT LONG RANGE Bluetooth 5.0 Transmitter, Receiver, and bypass (For simultaneous use with Sound Bar or Stereo Receiver) 3-in-1 Device.

Recommended Uses:

Transmitter -> Bluetooth-enable your TV, PC, AV receiver, TV Box etc. Stream audio to any Bluetooth headphone / speaker.

Receiver -> Bluetooth-enable a wired speaker, soundbar, home theater etc. Receive audio wirelessly from any Bluetooth audio device e.g. PC, mobile phone, etc.

Bypass -> If you have only ONE OPTICAL Output from TV that’s already occupied by a soundbar, you can use the BYPASS function. What’s more, your family can enjoy TV via Bluetooth headphones and a wired speaker simultaneously with independent volume control.

Built-in Volume Control can be used to adjust the volume on devices that did not come with volume control buttons.

Use aptX low latency to eliminate lip-sync delay. Use aptX HD to get a ‘better-than-CD’ listening experience.

Supports aptX low latency even during dual link for two headphones

Compatible with devices with Optical, RCA, and AUX audio outputs.

Can be used as a pair to extend wireless range, one Oasis Plus use a BT transmitter, another one as a BT receiver


Doesn't work / not recommended:

This is a Class 1 Bluetooth transceiver - proven to reach up to 164'. However, the range you get may vary due to different factors (see details below Q1).


For Optical output - Set audio format to PCM or Stereo. Dolby not supported.

Works as EITHER a transmitter or a receiver – NOT simultaneously.


Multipoint support works best for on / over-ear headphones. Not recommended to use dual-link with True Wireless earbuds due to current technical constraints with Truly Wireless technology in general.


For non- aptX LL supported headphones / speakers, Oasis Plus will still work but with 70-200ms Lip-sync delay; could be noticed by sensitive users. To eliminate latency effect, use a headphone that supports aptX Low Latency; we recommend Avantree Torus / AS9P / AS90P / AS90T / AS90TA

aptX HD NOT supported during dual-link.


aptX HD and aptX Low Latency cannot run simultaneously, only one at a time.

Not recommended for use with Musical Instruments.


Depending on the TV, the TV speaker may be muted when you plug the transmitter into its audio output jack.


Brand   Avantree

Item model number       BTTC-500P-GRY

Item Weight       3.17 ounces

Product Dimensions       4.49 x 1.18 x 2.95 inches

Item Dimensions LxWxH               4.49 x 1.18 x 2.95 inches

Color     Black

Voltage 5 Volts

Batteries             1 Lithium ion batteries required.

Manufacturer   Avantree


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Delivery Policy

Cost of Delivery

We charge a delivery fee of R79 for all orders on Monthly Madness.

How long does delivery take?

We deliver in 2-4 working days. 

Some outlying areas can expect up to 5 working days. 

Orders made after 11am will be processed the following working day.

Why do we charge for delivery fee?

We know that some companies offer free shipping - this is because they the shipping price in the price (it's a sneaky little tactic). 

We decided to be transparent and show you the delivery cost, rather than hiding it in the price. We would rather be honest with you and keep working on better pricing options to give you a better experience with us!

We value transparency and honesty, that is why we do NOT hide the price of shipping in the product price.

In order to offer you the best prices in South Africa, we unfortunately cannot afford to pay for everyone's shipping. We also didn't want to hide the shipping cost in the price. We are working on a system that may allow cheaper shipping in the near future, we will keep our community updated!

We decided to be transparent and show you the delivery cost, rather than hiding it in the price. We would rather be honest with you and keep working on better pricing options to give you a better experience with us!

Rest assured, we have worked long and hard on sourcing an affordable and FAST delivery service for you, and will continue to work on finding more ways to make things easier for our community. 

National Delivery Zone

We only operate and deliver within the borders of South Africa.

Handling & Insurance

Your order is fully insured from the moment it leaves us, right up until it’s in your hands! We only work with trusted door-to-door couriers.

Tracking Number

You will receive an email with a tracking number and link as soon as your goods have left our warehouse in Cape Town.

All orders received by 11 am will be processed the same day and dispatched the following working day on condition that payment reflects in the bank account of Monthly Madness and assuming no stock availability issues. Orders placed on weekends will be processed on the following Monday.

Returns and Refund

Your 100% satisfaction is important for us. We offer a 30-days Return & Exchange Policy:

  • If a product gets damaged or was faulty upon a delivery - we offer 100% refund.
  • Timing: we have a 30-days Return & Exchange Policy, since the day item was received.
  • To be eligible for a return, goods must be unopened, unused, undamaged and accompanied by proof of purchase.
  • For returns, please email admin@monthlymadness.co.za with the subject 'Returns' and include your order number, name and the reason for the return.
  • Seller will provide the customer with instructions where to send returned goods. Customers are strongly recommended to get proof of postage when returning goods to avoid "lost packages" situations.
  • Please note that customers are responsible for shipping costs of returned items.
  • When returned item is received and inspected, customer receives a confirmation email, notifying about the status of the refund.
  • If the refund is approved, then it will be processed and a credit will automatically be applied to customer's credit card or original payment method shortly after.

Defective goods

  • If your product is giving you any problems we offer a standard 6 month defective product warranty on all goods purchased through Monthly Madness
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  • Certain goods will have a warranty longer than 6 months which will be stated on the product page

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