VAORLO C83Plus 2-in-1 Bluetooth 5.4 Audio Adapter User Manual

1. Introduction

The VAORLO C83Plus is a versatile 2-in-1 Bluetooth 5.4 audio adapter designed to enhance your audio experience across various devices. It functions as both a Bluetooth receiver (RX mode) and a Bluetooth transmitter (TX mode), allowing you to wirelessly stream audio to or from non-Bluetooth devices. Featuring a high-definition color LED display, lossless sound quality, and multipoint connection capabilities, the C83Plus offers a seamless and intuitive wireless audio solution for your car, home, TV, PC, and even airplane entertainment systems.

2. Safety Information

• Keep the device away from water, moisture, and extreme temperatures.
• Do not attempt to disassemble or repair the device yourself.
• Use only the specified charging voltage (DC 5V) to prevent damage to the battery.
• Avoid dropping or subjecting the device to strong impacts.
• Keep out of reach of children.

3. Package Contents

Please check the package for the following items:

• 1 x C83Plus Bluetooth Audio Adapter
• 1 x Type-C Charging Cable
• 1 x User Manual

Note: If you did not select the "with AP Adapter" or "Deluxe Edition" package, the "Aircraft Audio Adapter" and RCA cable are not included. Please purchase them based on your needs.

4. Product Features

• Bluetooth 5.4 Technology: Ensures better compatibility and stability with various Bluetooth versions and devices.
• 2-in-1 Functionality (RX & TX Modes): Seamlessly switch between receiving and transmitting audio signals.
• High-Definition Color LED Display: Clearly shows working status, Bluetooth mode, battery level, and supports English lyrics display in RX mode.
• Lossless Sound Quality: High-resolution audio restoration with SBC decoding for a CD-level music experience.
• Built-in HD Microphone: Supports wireless music listening, hands-free calls, and navigation prompts in RX mode. (TX mode does not support microphone functionality).
• Multipoint Connection: In TX mode, connect to two Bluetooth headsets/speakers simultaneously. In RX mode, connect to two mobile phones simultaneously.
• Bending Resistant Plug: Designed with high resilience rubber for use in narrow environments like wall-mounted TVs or car armrest boxes.
• Long-Lasting Battery: Built-in 250mAh rechargeable lithium polymer battery provides approximately 9-11 hours of continuous use.
• Type-C Fast Charging: Universal Type-C interface for quick and convenient charging.
• 10-Meter Long-Distance Transmission: Enhanced antenna for stable, obstacle-free signal transmission.
• Active Search (TX Mode): Actively scans and displays nearby Bluetooth audio devices for intuitive connection selection.

5. Setup Instructions

5.1 Charging the Device

Before first use, fully charge the C83Plus. Connect the provided Type-C charging cable to the device's charging port and a DC 5V/1A power adapter (not included). The LED display will indicate charging status. A full charge takes approximately 2 hours.

Important: Using a charger other than 5V1A may affect battery life.

5.2 Power On/Off and Mode Selection

1. Power On/Off: Press and hold the multifunction key on the device to turn it on or off.
2. Select Mode: After powering on, press the multifunction key to switch between RX (Receiver) and TX (Transmitter) modes as needed. The current mode will be displayed on the LED screen.

6. Operating Instructions

6.1 RX Mode (Receiver)

In RX mode, the C83Plus receives Bluetooth audio from your mobile phone, tablet, or notebook and transmits it to non-Bluetooth devices like wired speakers, car audio systems, or wired headphones.

1. Connect to Audio Device: Insert the 3.5mm AUX jack of the C83Plus into the AUX input of your wired speaker, car stereo, or wired headphones.
2. Pairing: On your mobile phone or other Bluetooth-enabled device, search for "C83plus" in the Bluetooth settings and connect. The LED display on the C83Plus will show the connection status.
3. Connect Two Mobile Phones (Multipoint): After the first mobile phone is successfully connected, the wireless name of the phone will be displayed as 'A'. To connect a second phone, search for "C83plus" on the second phone and connect. The second phone will be displayed as 'B'. You can then switch music freely between the two connected phones.
4. Hands-Free Calling: When connected to a car kit or wired headphones with a microphone, you can answer, refuse, or hang up calls using the C83Plus's controls.
5. Lyrics Display: In RX mode, the device supports simultaneous display of English lyrics if the music file contains them.

6.2 TX Mode (Transmitter)

In TX mode, the C83Plus transmits audio from non-Bluetooth devices like TVs, PCs, or projectors to Bluetooth headphones or speakers.

1. Connect to Audio Source: Insert the 3.5mm AUX jack of the C83Plus into the audio output port of your TV, PC, projector, or other audio source.
2. Active Search and Pairing: The C83Plus will actively scan for nearby Bluetooth audio devices (headphones/speakers) and display their pairing names on the LED screen. Double-click the multifunction key to activate active search mode. Select the desired device from the list to connect.
3. Connect Two Bluetooth Headsets/Speakers (Multipoint): After the first wireless device is successfully connected, its name will be displayed as 'A'. To connect a second device, press the multifunction key to confirm, and the name of the second wireless device will be displayed as 'B'. You can now enjoy audio through two devices simultaneously.
4. Airplane Use: Insert the adapter into the headphone jack of the airplane's entertainment system to use your wireless headphones.

7. Maintenance

• Clean the device with a soft, dry cloth. Do not use liquid cleaners or aerosols.
• Store the device in a cool, dry place when not in use.
• Avoid exposing the device to direct sunlight or extreme temperatures.
• Ensure the charging port and AUX jack are free from dust and debris.

8. Troubleshooting

• Device not powering on: Ensure the device is fully charged.
• Cannot connect to a Bluetooth device: Make sure the C83Plus is in the correct mode (RX for receiving, TX for transmitting). In TX mode, double-click the multifunction key to activate active search and select the correct device from the display. Ensure the target Bluetooth device is in pairing mode.
• No sound: Check that the 3.5mm AUX cable is securely connected to both the C83Plus and the audio source/output device. Verify volume levels on both the C83Plus and connected devices.
• Lyrics not displaying in RX mode: This feature only supports English lyrics, and the music file must contain embedded lyrics. TX mode does not support lyrics display.
• Microphone not working in TX mode: The built-in microphone is only supported in RX (receiver) mode for hands-free calling. It is not functional in TX (transmitter) mode.
• Audio latency in dual connection mode: When connecting two Bluetooth headsets/speakers in TX mode or two phones in RX mode, a slight audio latency (up to 50ms) may be amplified. For best results, use the same Bluetooth headset/speaker or audio format encoding.
• Charging issues: Use a DC 5V/1A charger for optimal charging and battery protection.

9. Specifications

10. User Tips

• For optimal battery life, always use a DC 5V/1A charger.
• When using RX mode, ensure your music files contain embedded English lyrics for the lyrics display feature to function.
• In TX mode, utilize the active search function by double-clicking the multifunction key to easily find and connect to nearby Bluetooth devices, avoiding blind connections.
• Be aware that connecting two devices simultaneously (multipoint connection) may introduce a slight audio latency. For the best experience, try to use devices with similar Bluetooth versions or audio codecs.
• The flexible, bending-resistant plug makes this adapter ideal for tight spaces, such as behind wall-mounted TVs or in car armrest boxes.

11. Warranty and Support

This product comes with a standard manufacturer's warranty. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.