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3-in-1 Bluetooth Adapter
KAIY Bluetooth adapter seamlessly doubles as both a high-performance Bluetooth transmitter and a super-sensitive Bluetooth receiver. Experience the convenience of multi-function in one compact device!
Dual-Headphone Streaming
Bluetooth transmitter allows you to stream audio in perfect sync up to two AirPods, Bluetooth headphones, or speakers simultaneously. Whether you're having a cozy movie night with a loved one, or jamming out with a friend during a workout, ensures everyone can tune in to the same audio adventure.
Bluetooth Receiver for Home Stereo
Bluetooth audio receiver effortlessly streams audio wirelessly from any Bluetooth-enabled device directly to your home stereo system. No more tangled wires, Upgrade your home audio and enjoy music, podcasts, and movies the way they were meant to be heard, with seamless wireless connectivity.
Discover the Magic of Bypass Mode
Now, you don't have to choose between your Bluetooth transmitter and sound bar or sound system. Our transmitter Bypass Mode enables you to enjoy the best of both worlds simultaneously.
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Dual Optical AUX
Connect BT adapter to devices with optical or AUX.
Note: Use input ports in TX, output ports in RX.
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Upgrade the Display
Light-up LEDs provide a clear, visible indication of your pairing status
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Adjust Volume
Bluetooth Adapter: Turn button L/R.
On Phone: Phone's volume controls.
On TV: TV's volume controls.
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Long Rang Bluetooth
External antennas offer an impressive range of 30ft.
How to Setup Bluetooth Adapter?
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Step 1 ：Power On
Plug the Type-c power cable into the Bluetooth adapter's charging port and connect to a power source (charging adapter not included).
Press the power button for 3s to turn on the Bluetooth adapter.
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TX Mode
Connect the AUX/Optical cable to the Bluetooth adapter INPUT port and TV/PC/Projector port.
Switch to TX Mode.
Pair Bluetooth Headphones/Speaker, Press confirm when the device name shows on screen.
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RX Mode
Connect the AUX/Optical cable to the Bluetooth adapter OUTPUT port and the home stereo/old speaker port.
Switch to RX Mode.
Connect the Bluetooth of your Phone/Tablet/Laptop to "C41S" to play audio.
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Note: With the Bluetooth adapter, select only one mode at a time; TX and RX can't occur simultaneously. In TX mode, after pairing the first device, press the power button twice to search and pair a second Bluetooth device.
Dacia Mackinnon
Reviewed in the United States on March 3, 2025
Works well, good soundMy older TV, is not smart and no Bluetooth. In addition, my cable carrier stopped providing cable service. I got this device. Connected this Bluetooth transmitter to the TV’s optical audio output connection and paired them up. Best results in a few moments. Love this thing!
Frederick E. Hutchings
Reviewed in the United States on March 13, 2025
NeedMagnifier to read instructions. Seem to work on their own. Pait easily
Embedded EE
Reviewed in the United States on March 12, 2025
There are times when my wife and I want to use headphones to watch TV, so we do not disturb the rest of the house. My TV does not have 3.5mm out, but it is bluetooth capable. The TV does not support simultaneous bluetooth audio devices, so I was looking for a receiver with a 3.5mm out port. This looked like it covered all checkboxes, so I tried it out.Pros:1. It does not introduce a perceivable delay in audio, so my wired headphones work like my bluetooth with the TV. Audio is reasonably in sync with video.2. It’s a small footprint device, which can be tucked out of the way nicely.3. It uses USB-C 5v, so no heat and simple to power.4. All ports are clearly labeled, and the little LCD is easy to read.5. I didn’t need the instructions to setup. I had it out of the box and running in a couple of minutes.Cons:1. While the low voltage design is nice, it is underpowered. This results in the audio out being very quiet and difficult to hear. There is volume control on the device, but there is a loud “hiss” of poor source amplification if you increase volume beyond “6” (max volume is 16) on the device display2. Audio out is very flat, with only midrange frequencies clearly audible. This is fine for talk shows, but is terrible for anything else. I thought it was my earbuds I was testing with at first, but this was tested the same across all of my full range headsets.Summary: This does perform the functions it describes and is easy to use; however, only if you like listening to audio that sounds like an old single speaker transistor radio.
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