1. Product Overview
The HiBy USB C OTG Cable is designed to connect your source device (such as a smartphone or computer) to compatible HiBy headphone amplifiers, enabling high-quality digital audio transmission. This cable supports On-The-Go (OTG) functionality, allowing your source device to act as a host for the amplifier.
Compatibility: This cable is specifically designed for use with HiBy FC1, FC3, FC4, FD1, and FD3 Headphone Amplifiers.

Image showing the HiBy USB-C to Lightning OTG cable, featuring a braided black cable with a USB-C connector on one end and a Lightning connector on the other.
2. Setup Instructions
- Identify Connectors: The cable features a USB Type-C connector on one end and either a USB Type-C or Lightning connector on the other, depending on the specific variant purchased.
- Connect to Source Device: Insert the appropriate connector (USB Type-C or Lightning) into your smartphone, tablet, or computer. Ensure the connection is firm and secure.
- Connect to HiBy Amplifier: Insert the USB Type-C end of the cable into the designated USB input port on your HiBy FC1, FC3, FC4, FD1, or FD3 Headphone Amplifier.
- Verify Connection: Once both ends are connected, your source device should recognize the HiBy amplifier as an external audio device. You may need to select the amplifier as the audio output in your device's sound settings.

A HiBy USB-C OTG cable connecting a smartphone to a HiBy FC3 portable headphone amplifier, demonstrating a typical usage scenario.
3. Operating the Cable
The HiBy USB C OTG Cable functions as a direct digital audio link. Once connected, the audio signal from your source device is transmitted digitally to the HiBy amplifier, which then processes and outputs the sound to your headphones. No additional drivers are typically required for standard operation, as most modern operating systems and devices support USB Audio Class 2.0.
- Ensure your HiBy amplifier is powered on and properly connected to your headphones.
- Play audio from your source device. The sound should now be routed through the HiBy amplifier.
- Adjust volume levels on both your source device and the HiBy amplifier for optimal listening experience.
4. Maintenance
To ensure the longevity and optimal performance of your HiBy USB C OTG Cable, follow these maintenance guidelines:
- Storage: Store the cable in a clean, dry place away from direct sunlight and extreme temperatures. Avoid tightly coiling or bending the cable at sharp angles, which can damage internal wires.
- Cleaning: Use a soft, dry cloth to gently wipe the cable and connectors. Do not use harsh chemicals or abrasive materials. Ensure connectors are free of dust and debris before connecting.
- Handling: Always grasp the connector housing when plugging or unplugging the cable, rather than pulling on the cable itself. This prevents strain on the connection points.
5. Troubleshooting
If you encounter issues with your HiBy USB C OTG Cable, consider the following:
- No Audio Output:
- Ensure both ends of the cable are securely connected to your source device and HiBy amplifier.
- Verify that your source device's audio output is set to the connected HiBy amplifier.
- Check the volume levels on both your source device and the amplifier.
- Test the cable with another compatible device or amplifier if possible, to rule out issues with the source or amplifier.
- Frequent Disconnections:
- Ensure the connectors are fully inserted and not loose.
- Avoid putting strain on the cable or connectors during use.
- Check for any physical damage to the cable or connectors.
- Cable Gets Hot / Stops Working:
- Immediately disconnect the cable from all devices.
- This indicates a potential fault. Do not continue to use the cable. Contact HiBy customer support for assistance.
- Not Working with Specific Devices (e.g., iPhone 14):
- Ensure your device supports USB OTG audio output. Some devices may require specific settings or adapters not included with this cable.
- For Apple devices, ensure the Lightning connector variant of the cable is used and that the iOS version supports the connected amplifier.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | USB C OTG Cable |
| Brand | HiBy |
| Manufacturer | HiBy |
| Connector Type | USB Type C (one end), USB Type C or Lightning (other end) |
| Compatible Devices | HiBy FC1, FC3, FC4, FD1, FD3 Headphone Amplifiers |
| Color | Gray (as per product listing) |
| Item Weight | 0.705 ounces (20 Grams) |
| Package Dimensions | 5.32 x 3.03 x 0.28 inches |
| ASIN | B0CJJNCCDY |
| Date First Available | September 21, 2023 |
7. Warranty Information
This HiBy USB C OTG Cable is covered by a limited warranty against defects in materials and workmanship. The warranty period typically begins from the date of purchase. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the documentation provided with your product or visit the official HiBy website.
8. Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact HiBy customer support through their official website or the retailer from whom you purchased the product. You can often find contact information on the HiBy official website: www.hiby.com