Bluetooth Audio Receiver Transmitter for TV and Car
Late-night TV no longer means turning the volume up for the whole house. This USB dongle sends TV audio to your wireless headphones, or sends phone audio to wired speakers and a car stereo. One switch picks the direction, and the red and blue LEDs show which mode is active.
Read the full descriptionDescription
Late-night TV no longer means turning the volume up for the whole house. This USB dongle sends TV audio to your wireless headphones, or sends phone audio to wired speakers and a car stereo. One switch picks the direction, and the red and blue LEDs show which mode is active.
One compact USB dongle that turns any wired audio source into Bluetooth, or any Bluetooth source into wired audio
- Non-Bluetooth TV, stereo or CD player cannot connect to wireless headphones
- Wired speakers cannot receive audio from a phone, tablet or computer
- Needs a bulky, complicated setup
Give your old TV wireless headphones tonight
Your TV or stereo has no Bluetooth, so the house stays quiet or the volume stays too loud. This small USB adapter switches between sending and receiving, so the evening becomes yours again.
One switch, both directions covered

One switch, two directions
Slide the switch to TX and the dongle sends audio from the TV or stereo out to Bluetooth headphones. Flip it to RX and it takes audio from a phone or tablet and feeds a wired speaker. The red LED confirms TX and the blue LED confirms RX, so you can check the mode from across the room.

Plug in and it just works
The USB-A plug draws power from the port, so there is no separate power brick and no cable clutter behind the TV. There is no app and no driver. Plug in, pick the mode, and pair your headphones or speakers.

Built to stay put
The body measures 45 x 20 x 9.5 mm. It is matte black plastic with a diagonal wave-groove grip that is easy to pinch when pulling it out of a port. The metal USB plug has gold-plated contacts.
Small box, real numbers
- 18gTotal unit weight
- 44mmAcross the body
- 5.0Bluetooth version
- 3Items in the box
Plug it in, flip the switch, pair
- 1Plug in the USB-A plug
Push the metal plug into a USB-A port on the TV or computer. The dongle takes its power from the port, so there is no separate adapter.
- 2Set the switch
Red LED means TX, which sends wired audio out to Bluetooth headphones. Blue LED means RX, which takes Bluetooth audio from a phone and sends it to wired speakers.
- 3Pair and play
Put the headphones or speakers into pairing mode, connect, and start playback. Use the 3.5mm cable on TX and RX runs.
Everything needed to connect right away
- SY319 Bluetooth audio adapter×1
Two-way TX and RX dongle with mode switch
- 3.5mm audio cable×1
Mini cable for the wired side of TX and RX
Turning the volume down was never the fix

The volume problem
Every night the same trade-off: push the volume up and wake the house, or keep it low and miss half of what the actors say. Older TVs and hi-fi systems were built before Bluetooth, so there is no option to pair headphones and stop the argument.

A small fix that goes both ways
The adapter sits between your gear and the wireless world. Set it to TX and TV sound goes to your headphones. Set it to RX and your phone plays through the stereo, car or speakers. You reuse the 3.5mm or RCA cable you already own, and the box stays small enough to hide behind the TV stand.

Quiet evenings again
The TV runs at a volume that suits you, the headphones carry the dialogue, and the rest of the house sleeps. On the road, the car stereo plays your playlists again. The speakers at home stream from your phone without a new system behind them.
Cheaper than replacing the gear
| This adapter | One-way Bluetooth dongle | New Bluetooth TV or stereo | |
|---|---|---|---|
| Streams in both directions | — | — | |
| Works with existing wired TV, stereo or car AUX | — | ||
| No need to replace current gear | — | ||
| Bluetooth 5.0 |
Characteristics
Reviews
Questions and answers
If the TV has a USB-A port and a 3.5mm headphone or line output, the SY319 can bridge it. A CD player or stereo with a 3.5mm input works the same way in RX mode. Check that your device has a 3.5mm jack before you order.
It uses a standard USB-A plug and draws power from that port. There is no separate power supply to plug in and no extra cable to hide behind the TV.
Yes. Set the switch to RX, plug the dongle into the computer, connect the 3.5mm cable to the speaker input, and pair the computer. The blue LED confirms the mode.
Use the switch on the body. Red LED is TX, which sends audio out to Bluetooth headphones. Blue LED is RX, which receives Bluetooth audio for a wired speaker or stereo.
It runs on Bluetooth 5.0. If the sound drops, move the dongle to a powered USB port on the TV or a hub. Most drops come from a weak port or a second device holding the headphones.
You get two working modes in one small dongle, so it covers the TV, the stereo and the car. You keep the equipment you already own and avoid replacing a TV or stereo that still works fine.
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