FIIO F3331B Portable Hi-Res Bluetooth Transmitter User Guide

FIIO F3331B Portable Hi-Res Bluetooth Transmitter

Specifications:

• Product Name: F3331B Portable Hi-Res Bluetooth Transmitter
• Ports: Type-C connector, Status indicator light
• Bluetooth Codecs Supported: LDAC, aptX, aptX LL, aptX HD, aptX Adaptive, SBC
• Multi-point Connection: Yes, supports pairing with two devices simultaneously
• Compatibility: Mobile phones, computers, and other devices

Product Usage Instruction

1. Connecting to Devices:
   The product can be directly inserted into the device to connect to Bluetooth.

2. Bluetooth Codecs:
   Through the Type-C connector, connect to mobile phones, computers, and other devices to enable transmission of various Bluetooth codecs.

3. Multi-point Connection:
   The F3331B supports Bluetooth multi-point connection, allowing pairing with two receiving devices simultaneously.

4. Exclusive USB Audio Access Mode:
   When working under this mode, ensure volume levels are appropriate as some devices may default to maximum volume output or disable volume control.

5. Indicator Light:
   The indicator light displays the Bluetooth codec of the currently playing music: Blue (SBC), Purple (aptX/aptX LL), Yellow (aptX HD), White (LDAC), Green (aptX Adaptive).

FAQ:

• Q: What should I do if there is a compatibility issue with my mobile phone or music player?
  A: Compatibility issues may arise due to system and hardware differences. Ensure your device supports Bluetooth and the relevant codecs.

• Q: How do I know if the F3331B is in multi-point connection mode?
  A: The F3331B supports multi-point connection and can pair with two devices simultaneously.

• Q: Why is the volume control unavailable in Exclusive USB Audio Access Mode?
  A: Some devices may default to maximum volume output in this mode. Ensure volume levels are appropriate before using headphones.

F3331B Quick Start Guide
Portable Hi-Res Bluetooth Transmitter

Ports Labeled

1. Type-C connector
2. Status indicator light

How to use: The product can be directly inserted into the device to connect to Bluetooth.

Operation Explained

1.  Through the built-in Type-C connector of the F3331B, you can connect to mobile phones, computers, and other devices to enable transmission of Bluetooth LDAC, aptx and other codecs.
   • A compatibility issue may occur in certain mobile phones or music players due to system and hardware differences.
2. The F3331B supports Bluetooth multi-point connection, allowing pairing with two receiving devices simultaneously.
3.  When it is working under the Exclusive USB Audio Access Mode, some devices may default to maximum volume output or the volume control may be unavailable. Please ensure the volume level is appropriate before wearing headphones.
4. The indicator light of the F3331B can display the Bluetooth codec of the currently playing music, as shown below:

Notes and Precautions

1.  If the JA11 is charged through the USB of mobile phones or computers, it will consume their power.

2.  Since the JA11 features a high-performance DAC/Amp chip, it is normal that heating would occur during use.

3.  Please adjust the volume to a suitable level before wearing headphones so as to protect your hearing.

4.  Please do not wear headphones when plugging in or unplugging the headphones
   in case there may be a sudden impulse noise damaging your hearing.

5. Please do not repair or disassemble the product on your own and please keep it away from water.

6.  You might be unable to hear the sound of the surroundings when wearing headphones. For your safety, please avoid using headphones in dangerous situations.

List of Items Included (please check if the following items are included)

F3331B
USB-A to Type-C adapter*1

To Learn More

1.  For related video instructions of the F3331B and FAQ (Frequently Asked Questions), please scan the QR code below.
2.  To learn more about the product, please visit our website: www.fiio.com

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure condition without restriction
FCC ID：R56-F33311

References

• FiiO--Born for Music

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