1. Introduction
The JCALLY JM12 is a compact and high-performance digital audio adapter designed to enhance your audio experience. It converts digital audio signals from a Type-C port to an analog 3.5mm output, allowing you to connect traditional headphones or audio devices to modern Type-C enabled smartphones, tablets, and computers. Featuring a built-in KTO2H20 DAC chip, the JM12 supports high-resolution audio formats including PCM 32bits/384KHz and DSD128, delivering outstanding decoding power and high-fidelity sound. Its robust construction and versatile compatibility make it an ideal accessory for audiophiles and everyday users alike.
2. Package Contents
Please check the package for the following items:
- 1 x JCALLY JM12 Digital Audio Adapter
3. Specifications
The following table details the technical specifications of the JCALLY JM12 Digital Audio Adapter:
| Feature | Specification |
|---|---|
| Brand | JCALLY |
| Product Name | JM12 Digital Audio Adapter |
| DAC Chip | KTO2H20 |
| PCM Support | 32bits 384KHz |
| DSD Support | DSD128 |
| Signal-to-Noise Ratio (SNR) | 112dB |
| Dynamic Range (DR) | 113dB |
| Crosstalk | -52dB |
| Distortion | -87dB |
| Frequency Response (FR) | 20Hz～20KHz |
| Output Power | 27.5mW@32Ω |
| Conductor | Silver-plated conductor + silver foil wire shield |
| Color | Silver |
| Length | 110mm ± 10mm |
| Weight | Around 6g |
| Input Type | LINE IN (AUDIO IN) |
| Output Type | USB (Type-C) |
| Recommended Headphone Max Impedance | 251 - 300 Ohm |
| Built-in Battery | No |
| WIFI | No |
| Bluetooth | No |
4. Setup
The JCALLY JM12 Digital Audio Adapter is designed for simple plug-and-play operation.
- Connect to Source Device: Insert the Type-C connector of the JM12 adapter into the Type-C port of your compatible device (e.g., smartphone, tablet, laptop).
- Connect Audio Output: Plug your 3.5mm headphones, earphones, or other audio devices into the 3.5mm jack of the JM12 adapter.
- Verify Connection: Ensure both connections are secure. Your device should automatically recognize the adapter as an audio output device.
5. Operating Instructions
Once connected, the JM12 adapter functions as an external sound card, processing digital audio from your device and outputting it through the 3.5mm jack. No additional drivers are typically required for most operating systems.
- Audio Playback: Play any audio content (music, videos, podcasts) on your connected Type-C device. The sound will be routed through the JM12 to your 3.5mm audio device.
- Microphone Function: The JM12 supports microphone input, allowing you to use headphones with an inline microphone for calls, voice recording, or online communication.
- Volume Control: Adjust the volume directly from your connected Type-C device.
6. Maintenance
To ensure the longevity and optimal performance of your JCALLY JM12 adapter, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to gently wipe the adapter. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid excessive bending or pulling on the cable. The adapter is designed for durability, having undergone 10,000 bending tests, but proper handling will extend its lifespan.
- Connection Care: Always grasp the connector housing when plugging or unplugging, rather than pulling on the cable itself.
7. Troubleshooting
If you encounter issues with your JM12 adapter, please refer to the following common problems and solutions:
- No Sound Output:
- Ensure both the Type-C and 3.5mm connections are fully inserted and secure.
- Check the volume level on your source device.
- Verify that your source device's Type-C port supports audio output. Some older or specific devices may not support audio via Type-C.
- Try connecting a different pair of headphones or audio device to rule out issues with your audio equipment.
- Test the adapter with another compatible Type-C device if possible.
- Buzzing or Noise:
- Ensure all connections are tight and free from debris.
- Try a different audio source or headphones to determine if the noise originates from the adapter or other equipment.
- Avoid placing the adapter near strong electromagnetic interference sources.
- Microphone Not Working:
- Confirm your headphones have a working inline microphone.
- Check your device's audio settings to ensure the external microphone is selected as the input device.
- Compatibility Issues (e.g., with Galaxy S23 Plus):
- The JM12 is designed to be widely compatible with most Type-C devices that support audio output. However, specific device models or operating system versions might have unique requirements or limitations.
- Ensure your device's software is up to date.
- Consult your device's manufacturer specifications regarding Type-C audio output support.
8. User Tips
- For optimal sound quality, use high-quality audio files and headphones.
- If experiencing any buzzing or noise, ensure the connection is secure and try a different audio source or headphones to isolate the issue.
- When connecting to a smartphone, verify that your phone's Type-C port supports audio output, as some phones may require specific settings or may not support it at all.
9. Warranty and Support
The JCALLY JM12 Digital Audio Adapter is covered by a manufacturer's warranty against defects in materials and workmanship. For detailed warranty information, technical support, or service inquiries, please contact your retailer or the official JCALLY customer support channels.
Please retain your proof of purchase for warranty claims.
