MR268 Wireless Audio Receiver & Transmitter User Manual

2025/05/03 ClassificationBluetooth Audio Receiver Bluetooth Receiving and Transmitting 2 in 1 210 0

MR268 Multi-functional Pro Wireless Audio Adapter – Revolutionizing Your Wireless Audio Experience with Bluetooth 5.4 Receiver, Transmitter & Broadcast Capabilities!

The MR268 represents a groundbreaking leap in wireless audio technology, integrating the latest Bluetooth 5.4, LE Audio, and Broadcast Audio functionalities into a single, versatile device. Acting as both a high-fidelity Bluetooth receiver and a powerful Broadcast Audio transmitter, it supports a comprehensive range of audio codecs, including SBC, AAC, APTX series audio, LC3, and Broadcast Audio, ensuring exceptional sound quality across all your wireless audio needs.

Equipped with multiple input options—Bluetooth, USB, AUX, and MIC (for connecting external microphones)—the MR268 offers unparalleled flexibility. It excels as a Broadcast Audio encoder, capable of simultaneously sharing audio streams with over 100 compatible devices. This makes it an ideal solution for a variety of scenarios, such as tour guiding, group fitness classes, and multi-participant conferences, where seamless, synchronized audio sharing is essential.

With the MR268, prepare to elevate your wireless audio experience to new heights!

Key Features:

QCC High-End Chipset Design: Equipped with the latest Bluetooth LE AUDIO technology, the MR268 supports seamless connectivity with mobile phones featuring LE AUDIO functionality available on the market.
Dual Bluetooth Audio Reception & Broadcast Audio Capabilities: Combines traditional Bluetooth and LE Bluetooth audio receiver functionalities with Broadcast Audio RX/TX capabilities, offering a versatile and comprehensive wireless audio solution.
Multiple Input Options: Features Bluetooth, USB, AUX, and MIC (for external microphone connection) inputs, providing unparalleled flexibility and adaptability for various audio sources and scenarios.
Comprehensive Audio Codec Support: Fully supports a wide range of audio codecs, including SBC, AAC, APTX series audio, LC3, and Broadcast Audio, ensuring high-quality, diverse audio playback and transmission options.
Long-Lasting Built-in Polymer Lithium Battery: Equipped with a high-capacity polymer lithium battery for extended usage times, reducing the need for frequent recharging and enhancing convenience.
Back Clip Design for Portability: Features a convenient back clip, making it easy to carry and attach to clothing or bags, ideal for on-the-go use.
Intelligent LED Status Indicators: Equipped with smart LED status lights that provide clear, at-a-glance visual feedback on the device’s operating status, ensuring easy monitoring and control.
User-Friendly Operation: Simplified product operation with multi-state LED indicators for clear and straightforward recognition of the device’s working status.
Effortless Connectivity: Offers hassle-free connectivity without the need for complex driver installations or APP downloads, providing a seamless and intuitive user experience.

1. LED Indicator Definitions:

Operating Mode Indicators & Status

“LE” Light On: Device is in LE Audio Bluetooth working mode.
“BT” Light On: Device is in standard Bluetooth working mode.
“BT” Light Slow Blinking: Bluetooth reconnection state.
“BT” Light Fast Blinking: Bluetooth pairing state.
“BT” Light Solid On: Bluetooth connection successful.
“RX” Light On: Device is in Broadcast RX working mode.
“RX” Light Slow Blinking: Broadcast RX reconnection state.
“RX” Light Fast Blinking: Broadcast RX pairing state.
“RX” Light Solid On: Broadcast RX connection successful.
“TX” Light On: Device is in Broadcast TX working mode.
CODE RGB Light: Color corresponds to audio codecs: SBC (Blue), AAC (Purple), aptX (Light Blue), aptX HD (Green), Aptx adaptive high quality (Yellow), Aptx Lossless (Red).
“Lightning Bolt” Light: Lights up during charging and turns off automatically when fully charged.
“BT, AUX&MIC, AUX, MIC” Lights On: Indicates the device is operating in Bluetooth (BT light on), USB (AUX&MIC lights on simultaneously), AUX, or MIC audio input channels.

Mode Descriptions:

BT/LE: Bluetooth receiver functionality. If your phone supports Bluetooth LE AUDIO, the device will automatically match and use the higher-level LE AUDIO.
Broadcast RX/TX: Two working modes for broadcast audio, featuring one-to-many connection capabilities.

2. Functional Operations

1) Power On/Off

Slide the switch to “ON” to power on the device.
Slide the switch to “OFF” to power off the device. (Note: Ensure at least a 5-second interval between operations to avoid potential power-on issues.)

2) Auto Power-Off Function

The device will automatically power off after 15 minutes of inactivity. It can be awakened by turning it on again. (Note: The TX broadcast mode does not have an auto power-off feature.)

3) Low Battery Warning

When the battery is low, the charging red light will blink, and a low battery alert tone will sound.

4) BT/LE, Broadcast RX/TX Mode Switching

Press the mode button once to switch between BT/LE and Broadcast RX modes.
Press and hold for 1 second to enter Broadcast TX mode; press the mode button again to exit.

5) Audio Source Input Switching (In Broadcast TX Mode)

Press to switch between BT, USB, AUX, and MIC audio input sources.

Notes:

When using the BT Bluetooth audio source, pause the music before switching. The system defaults to Bluetooth audio priority.
For BT Bluetooth audio source usage, press and hold the multifunction button for 1 second to enter pairing state (RX light fast blinks), then connect with your phone or tablet.
When using USB audio, both AUX and MIC lights will be on.
When using MIC audio input, the sound picked up by the MIC will be transmitted to Broadcast RX devices. The device supports external microphone connection.

BT/LE Receiver Mode:

Connect your phone, computer, or PAD to the device’s Bluetooth receiver function to transmit music to an audio device with an AUX input.

Operation Steps:

Slide the power switch to “ON”.
Press the mode button to switch to BT/LE mode; the “BT” light will be on.
Press and hold the multifunction button for 1 second to enter pairing state; the “BT” light will fast blink (3 times per second).
Turn on Bluetooth on your phone, search for, and connect to “LE520pro”.
After successful connection, the “BT/LE” light will be solid on.
Insert a 3.5mm audio cable into the “OUT” audio output port on the device and the other end into the audio input port of your home audio device to enjoy music.

Note: If your phone supports Bluetooth LE AUDIO, the device will automatically match and use the higher-level LE AUDIO.

Broadcast RX Mode:

Use with a device equipped with Broadcast Audio transmitter functionality to receive sound on an audio device with an AUX input.

Operation Steps:

Turn on the Broadcast Audio transmitter and set it to broadcast mode.
Slide the power switch of this device to “ON”.
Press the mode button to switch to Broadcast RX mode; the “RX” light will be on and fast blink (3 times per second), automatically pairing with the Broadcast Audio transmitter.
After successful connection, the “RX” light will be solid on.
Insert a 3.5mm audio cable into the “OUT” audio output port on the device and the other end into the audio input port of your home audio device to enjoy music.

Note: If connection fails after a long time, try restarting the device.

Broadcast TX Mode:

Pair with audio source output devices to wirelessly broadcast sound to multiple Broadcast Audio receivers.

Operation Steps:

Turn on the Broadcast Audio receivers and set them to pairing state.
Slide the power switch of this device to “ON”.
Press and hold the mode button for 1 second to switch to Broadcast TX mode; the “TX” light will be on, and the device will automatically pair with the Broadcast Audio receivers.

Note: Due to the Broadcast TX mode’s broadcasting nature, connection status cannot be identified on this device. Please check the Broadcast Audio receivers for connection status.

Insert a 3.5mm audio cable into the “IN” audio input port on the device and the other end into the audio output port of your home TV.
Press the Broadcast TX Input audio input switching button to switch the audio to AUX; the “AUX” light will be on.

Notes:

If the BT Bluetooth audio source is already connected, other audio sources cannot be switched. The system defaults to Bluetooth audio priority.
For BT Bluetooth audio source usage, press and hold the multifunction button for 1 second to enter pairing state, then connect your phone or tablet to the device’s Bluetooth.
When using MIC audio input, the sound picked up by the MIC will be transmitted to Broadcast RX devices. The device supports external microphone connection.

3. Charging

The product has a built-in rechargeable battery. The charging red light blinks during low battery, indicating the need for charging. (It is recommended to fully charge the device before first use.)

Insert one end of the USB charging cable into the device’s charging port and the other end into a standard USB 5V power outlet (recommended charger: 5V 1A; do not use variable voltage fast chargers).
Charging time is approximately 2 hours. The red light will be solid on during charging and will turn off when fully charged.

Notes:

Current interference noise may occur when the battery is extremely low or the charging power source is of poor quality.
Avoid storing the device with low battery for extended periods, as it may lead to battery self-protection and inability to supply power.
Current interference noise may occur when using the device while charging. Removing the charging cable can resolve this issue.

Product Parameters

Brand: AYINO
Model: MR268
Bluetooth Version: V5.4
Bluetooth Reception Protocols: SBC, AAC, aptX, aptX HD, Aptx adaptive high quality, Aptx Lossless, LC3 Broadcast Audio
Bluetooth Transmission Protocol: Broadcast Audio
Input/Output Interfaces: USB, AUX, MIC (supports external microphone)
Effective Distance: >20M (line-of-sight without obstructions)
BT Mode: Traditional Bluetooth reception, LE Audio reception
BA Mode: Broadcast Audio reception/transmission
Connection Characteristics: One-to-two in BT mode, one-to-N in Broadcast mode
Working Time: 15 hours
Battery Capacity: 300mAh
Charging Time: Approximately 2 hours
Input Voltage: DC5V
Product Size: 52.547.522.5mm
Product Weight: 26 grams

Troubleshooting

Adapter Not Working Properly?

Check if the device’s battery is low. Connect the charging cable and try turning it on again. The indicator light should light up when the device is on.
If unable to search for Bluetooth devices (Bluetooth headphones or speakers), check if the device is in search pairing state. The “BT” light should be fast blinking (3 times per second) for search pairing state. Refer to the connection methods in the functional operations section.
Determine the device’s working mode and status based on the LED indicators.
If there is no sound after connection, check if the audio interface on the device corresponds to the device’s audio channel. Determine this based on the LED indicators.
If experiencing intermittent or stuttering sound during use, try restarting the transmitter device or Bluetooth headphones. Alternatively, delete all Bluetooth connections on your phone in receiver mode, restart your phone, and reconnect to the device.
Do not place the device on metal objects or in front of TVs without obstructions. Do not open the cover or touch any internal components.

Previous: MR230PRO Bluetooth Audio Receiver Manual