Meizu LifemeHIFI Audio USB-C to 3.5mm DAC Headphone Adapter User Manual

1. Introduction

This manual provides instructions for the Meizu LifemeHIFI Audio USB-C to 3.5mm DAC Headphone Adapter. This device converts digital audio signals from a USB-C port to analog audio for 3.5mm headphones, while also functioning as a headphone amplifier. Please read this manual carefully before use to ensure proper operation and to maximize your audio experience.

Figure 1: Meizu LifemeHIFI Audio USB-C to 3.5mm DAC Headphone Adapter. This image shows the compact design of the adapter, featuring a USB-C male connector on one end and a 3.5mm female jack on the other, connected by a braided cable.

2. Product Features

High-Fidelity Audio Conversion: Integrates a Digital-to-Analog Converter (DAC) for superior sound quality.
Headphone Amplifier: Built-in precision power amplifier circuit supports headphone impedances from 16 to 600 ohms.
Wide Compatibility: Designed for devices with a USB-C port, including various smartphones and tablets (e.g., Samsung S24/S23, iPad Pro, Google Pixel 9/8/7).
Advanced DAC Chip: Utilizes the Conexant CX31993 high-performance independent DAC decoder chip.
Exceptional Audio Specifications:
- Signal-to-Noise Ratio (SNR): >124dB
- Dynamic Range (DNR): >111dB
- Distortion (THD+N): -95dB
- PCM Decoding: Up to 32bit/384kHz
- Frequency Response: 20-40kHz
- Output Load: 16-600Ω adaptive
- Output Power: 31mW dual channel @32Ω
Durable Design: Features a braided cable for enhanced durability, tested for a 10,000 bend lifespan.

Figure 2: Independent DAC Decoder Chip. This image highlights the Conexant CX31993 DAC chip, emphasizing its role in providing a pure HiFi audio experience with high signal-to-noise ratio and dynamic range.

Figure 3: 600 Ohm Impedance Support. This graphic illustrates the adapter's capability to drive headphones with impedances from 16 to 600 ohms, along with its 32bit/384kHz PCM output and DSD64/DSD128 decoding.

Figure 4: Built to Last Design. This image showcases the adapter's robust construction, highlighting its braided cable and a tested 10,000 bend lifespan, indicating enhanced durability.

3. Setup Instructions

Connect Headphones: Plug your 3.5mm headphones or audio device into the 3.5mm female jack of the Meizu LifemeHIFI Audio adapter. Ensure the connection is secure.
Connect to Device: Insert the USB-C male connector of the adapter into the USB-C port of your compatible smartphone, tablet, or computer.
Automatic Recognition: Most compatible devices will automatically recognize the adapter as an external audio output device. No additional drivers are typically required.
Audio Output Selection (if necessary): On some devices, you may need to manually select the USB audio output in your device's sound settings. Refer to your device's user manual for specific instructions on audio output selection.

Figure 5: Wide Compatibility. This image displays various smartphones and tablets with USB-C ports, illustrating the broad range of devices compatible with the Meizu LifemeHIFI Audio adapter.

4. Operating Instructions

Once the adapter is connected and recognized by your device, it operates as a standard audio output. Simply play audio from your device, and the sound will be routed through the adapter to your connected 3.5mm headphones.

Volume Control: Adjust the volume using your connected device's volume controls. The adapter amplifies the signal, but the primary volume control remains with the source device.
High Impedance Headphones: The built-in amplifier is designed to drive high-impedance headphones effectively, providing clear and powerful audio.

5. Maintenance

Cleaning: Use a soft, dry cloth to clean the adapter. Avoid using liquid cleaners or solvents.
Storage: Store the adapter in a cool, dry place when not in use. Avoid extreme temperatures.
Handling: Do not bend the cable excessively or apply undue force to the connectors. While designed for durability, improper handling can cause damage.
Connector Care: Keep the USB-C and 3.5mm connectors free from dust and debris to ensure optimal connection.

6. Troubleshooting

Problem	Possible Cause	Solution
No sound from headphones.	Adapter not fully connected. Headphones not fully connected. Incorrect audio output selected on device. Device volume too low or muted. Incompatible device.	Ensure both USB-C and 3.5mm connections are secure. Check device's sound settings to confirm USB audio output is selected. Increase device volume. Verify device compatibility (refer to device manufacturer specifications).
Static or distorted sound.	Loose connection. Interference. Damaged cable/adapter. Source audio quality issue.	Reconnect the adapter and headphones firmly. Try using the adapter in a different location to rule out interference. Test with another pair of headphones or another USB-C device if possible. Ensure the audio source file or streaming quality is good.
Adapter not recognized by device.	Incompatible device. Device software issue.	Confirm your device supports USB-C audio output via a DAC adapter. Restart your device. Check for any available software updates for your device.

7. Specifications

Feature	Detail
Model	LifemeHIFI Audio (HA01)
Brand	Meizu
Connector Type	USB Type-C Male to 3.5mm Female Auxiliary
DAC Chip	Conexant CX31993
Signal-to-Noise Ratio (SNR)	>124dB
Dynamic Range (DNR)	>111dB
Distortion (THD+N)	-95dB
PCM Decoding	Up to 32bit/384kHz
Frequency Response	20-40kHz
Output Load	16-600Ω adaptive
Output Power	31mW dual channel @32Ω
Item Weight	0.634 ounces (approx. 18 grams)
Color	Blue

8. Warranty and Support

Meizu products are designed for reliability and performance. For warranty information and technical support, please refer to the official Meizu website or contact your retailer. Keep your purchase receipt as proof of purchase for any warranty claims.

For further assistance, please visit the Meizu Store on Amazon.