Introduction
The KEBIDU T500 is a versatile Bluetooth 6.0 audio receiver designed to upgrade your audio experience. It features multiple input and output interfaces, including 3.5mm AUX, RCA, Coaxial, USB U-Disk, and a 6.5mm microphone input. This device allows you to wirelessly stream audio from Bluetooth-enabled devices to wired speakers or headphones, play music directly from a USB drive, and even enjoy karaoke with its microphone input. It comes with an infrared remote control for convenient operation and an external antenna for enhanced signal reception.
Safety Information
- Ensure the device is powered by a 5V1A charger to prevent insufficient voltage/current, which may cause noise.
- This device is a Bluetooth audio receiver only; it does not transmit Bluetooth signals for devices like keyboards or mice.
- Keep the device away from water and high humidity environments.
- Do not attempt to disassemble or repair the device yourself. Refer to qualified service personnel.
- Avoid exposing the device to extreme temperatures.
Package Contents
Please check the box for the following items:
- 1x T500 Bluetooth Audio Receiver Adapter
- 1x Remote Control
- 1x 3.5MM Audio Cable
- 1x RCA Audio Cable
- 1x Coaxial Audio Cable
- 1x Type-C Power Cable
- 1x User manual
Product Overview
The KEBIDU T500 features a compact design with various interfaces for audio input and output, along with control knobs and an external antenna for optimal performance.


Key Features:
- Bluetooth 6.0 Chip: Enhanced compatibility and stability for wireless audio streaming.
- 6.5mm HD Microphone Input: Supports microphone access for karaoke with lossless transmission.
- U-Disk Playback: Plug and play functionality with built-in HD audio decoder for MP3/APE/FLAC/WMA/WAV formats.
- IR Remote Control: Wireless control (5-10M range) for volume, signal switching, and song switching. (Note: Does not support power on/off).
- External Antenna: Improves signal strength and transmission distance.
- Lossless Decoding: Delivers HIFI sound quality without delay.
- Multi-Interface: Supports various audio input (Coaxial, 6.5mm MIC, USB, 3.5mm AUX) and output (3.5mm AUX, R-L RCA) options.
Specifications
| Feature | Detail |
|---|---|
| Product Name | Multi-Function Bluetooth Audio Receiver Adapter |
| Model Number | T500 |
| Brand Name | kebidu |
| Material | Aluminum Alloy |
| Bluetooth Version | 6.0 |
| Bluetooth Protocol Support | A2DP/AVRCP/HFP/HSP |
| Bluetooth Decoding | SBC |
| Wireless Type | Bluetooth |
| Sound Track | Double |
| Audio Input Interfaces | Coaxial, 6.5mm MIC, USB U-Disk, 3.5mm AUX |
| Output Interfaces | 3.5mm AUX, R-L RCA |
| U-Disk Support Formats | WMA/WAV/FLAC/APE/MP3 |
| Operation Mode | Key switching, Knob adjustment, Remote control |
| Power Input | DC 5V (via Type-C) |
| Remote Control Range | 5-10 meters (barrier-free) |
| Package | Yes |
| Dimensions (Device) | 108mm (L) x 60mm (W) x 27mm (H) |
| Dimensions (Remote Control) | 86mm (L) x 40mm (W) |
| Transmission Distance | Up to 15M |

Setup Instructions
Follow these simple steps to connect and start using your KEBIDU T500 audio receiver:
1. Connect the Device
Connect the T500 receiver to your audio playback device (e.g., speakers, amplifier) using the appropriate audio cables (3.5mm AUX, RCA, or Coaxial). Ensure the external antenna is securely attached. Connect the Type-C power cable to the DC/5V port on the receiver and plug the other end into a 5V1A USB power adapter (not included) or a USB port on your device. Turn on the device.

Connect the T500 to your audio system and power source. 2. Connect Bluetooth (Receiver Mode)
On your Bluetooth-enabled device (e.g., smartphone, tablet, laptop), turn on Bluetooth and search for available devices. Select "T500" from the list to pair. The device will enter receiver mode, allowing you to stream audio wirelessly.

Pair your mobile device with the T500 via Bluetooth. 3. Pairing is Successful
Once paired, you can start playing audio from your Bluetooth device through the T500 receiver to your connected speakers or headphones.
Alternative Connections:
- U-Disk Playback: Insert a USB flash drive containing MP3/APE/FLAC/WMA/WAV audio files into the USB port. The device will automatically detect and play the music.
- Microphone Connection: Connect a 6.5mm microphone to the MIC input for karaoke functionality.
- Coaxial Input: Use a coaxial cable to connect to devices with coaxial audio output.


Operating Instructions
Front Panel Controls:
- MODE Button: Press to cycle through input modes (Bluetooth, AUX, Coaxial, USB).
- Previous/Next Song Buttons: Used for track navigation during U-Disk playback or Bluetooth streaming.
- Play/Pause Button: Short press to play/pause. Long press to toggle input mode.
- MIC Volume Knobs: Adjust microphone volume.
- Bass/Treble Knobs: Adjust bass and treble levels for microphone input.
- Master Volume Knob: Adjust the overall output volume.
Remote Control Functions:
The included IR remote control provides convenient wireless operation within a 5-10 meter range (barrier-free). Functions include:
- Volume adjustment
- Signal/song switching
- Mute
- Mode selection
- Numeric keypad for direct track selection (if supported by media player)
Note: The remote control does NOT support powering the device on or off.

Karaoke Function:
Connect a 6.5mm microphone to the MIC input. Adjust the microphone volume, bass, and treble using the dedicated knobs on the front panel for an optimal karaoke experience. The device supports lossless transmission for high-quality sound.

Maintenance
- Clean the device with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Keep the device free from dust and debris to ensure proper ventilation.
- Store the device in a cool, dry place when not in use.
- Avoid dropping or subjecting the device to strong impacts.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output. | Incorrect input/output mode selected; cables not connected properly; volume too low. | Check all cable connections. Ensure the correct input mode is selected on the T500. Increase the volume on both the T500 and your connected audio device. |
| Bluetooth pairing fails. | T500 not in pairing mode; Bluetooth on source device is off; too far from the device. | Ensure the T500 is in Bluetooth mode. Turn off and on Bluetooth on your source device. Move closer to the T500. Restart both devices. |
| Static or noise during audio playback. | Insufficient power supply; interference; loose cable connection. | Use a 5V1A USB charger for power. Ensure all cables are securely connected. Move the device away from other electronic devices that might cause interference. |
| U-Disk not playing. | Unsupported file format; U-Disk not properly inserted; corrupted files. | Ensure audio files are in supported formats (MP3/APE/FLAC/WMA/WAV). Reinsert the U-Disk. Try a different U-Disk or files. |
| Remote control not working. | Batteries dead; line of sight blocked; too far from the device. | Replace remote control batteries. Ensure there is a clear line of sight to the T500's IR receiver. Operate within the 5-10 meter range. |
User Tips
- For optimal audio quality and to prevent unwanted noise, always power the T500 with a stable 5V1A USB charger.
- When using the microphone, experiment with the Bass and Treble knobs to find the best sound for your voice and music.
- Position the external antenna vertically for the best Bluetooth signal reception and range.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the retailer/manufacturer directly. Keep your proof of purchase for any warranty claims.