1. Introduction
The SHANLING UA Mini is a compact and portable USB DAC (Digital-to-Analog Converter) and headphone amplifier designed to enhance the audio quality from your digital devices. Featuring a high-performance CS43131 DAC chip and SGM8262-2 operational amplifier, it supports Hi-Res Audio formats including DSD256 and PCM up to 384kHz/32bit. Its universal USB-C connection ensures wide compatibility with Android, Apple, and Windows devices, providing a clean and powerful audio output for a superior listening experience.
Figure 1: SHANLING UA Mini Product Overview
2. Features
- High-Performance DAC Chip: Integrates the Cirrus Logic CS43131 for neutral and detailed sound reproduction.
- Enhanced Headphone Output: Utilizes the SGM8262-2 Op-Amp for robust headphone driving power.
- Hi-Res Audio Support: Decodes PCM up to 384kHz/32bit and native DSD256.
- Ultra-Low Noise Output: Achieves a low distortion of 0.0004% @ 32Ω for a clean background.
- Lightweight and Portable: Weighs approximately 8.4g, making it easy to carry.
- Universal USB-C Connectivity: Compatible with Android, Apple (via adapter, not included), and Windows devices.
- Silver-Plated Copper Cable: Ensures pure signal transmission.
- RGB LED Playback Indicator: Displays the current audio sampling rate with different colors.
- Durable Metal Body: Provides a premium feel and robust construction.
Figure 2: Key Features of UA Mini
3. Package Contents
Please check the package for the following items:
- SHANLING UA Mini USB DAC AMP Unit
- USB-C to USB-C Cable (integrated)
- (Optional: USB-C to Lightning adapter for Apple iOS devices, if included with your specific purchase)
4. Specifications
| Parameter | Value |
|---|---|
| Weight | Approx. 8.4g |
| Dimensions (Main body) | 42 x 10 mm |
| Total Length with Cable | 128mm |
| Headphone Connector | 3.5mm |
| Data Connector | USB-C |
| USB Chip | Savitech SA9312 |
| DAC Chip | Cirrus Logic CS43131 |
| Amplifier | SGM8262-2 |
| PCM Support | 44.1-384kHz/32bit |
| DSD Support | DSD64-DSD256 |
| Output Power (32Ω THD+N<1%) | L+R = 205mW+205mW |
| Output Power (16Ω THD+N<1%) | L+R = 260mW+260mW |
| SNR (32Ω Load / A-weighted) | 126dB |
| DNR (32Ω Load / A-weighted) | 126dB |
| THD+N (-3dB @ 32Ω Load) | 0.0004% |
| Noise Floor (A-weighted) | 1.4µV |
| Frequency Response | ±0.2dB (20-20kHz) |
| Output Impedance | 0.5Ω |
| Body Material | Metal |
| Built-in Battery | No |
| WIFI | No |
| Bluetooth | No |
Figure 3: Detailed Specifications
5. Setup & Installation
- Connect to Source Device: Plug the USB-C connector of the UA Mini into the USB-C port of your smartphone, tablet, or computer.
Figure 4: Connecting UA Mini to a Smartphone
Figure 5: Connecting UA Mini to a Laptop
- Connect Headphones: Insert your 3.5mm headphones into the headphone jack of the UA Mini.
Figure 6: Connecting Headphones to UA Mini
- Device Recognition: The UA Mini is typically plug-and-play. Your source device should automatically recognize it as an external audio output device. You may need to select it as the default audio output in your device's sound settings.
- iOS Devices: For Apple iOS devices, a USB-C to Lightning adapter (not included) may be required.
6. Operation
Once connected, the UA Mini operates automatically. Play audio from your source device, and the sound will be routed through the UA Mini to your connected headphones.
RGB LED Playback Indicator
The small LED light on the UA Mini indicates the current audio sampling rate:
- Blue: 44.1kHz - 48kHz
- Green: 88.2kHz - 96kHz
- Yellow: 176.4kHz - 192kHz
- Purple: 352.8kHz - 384kHz
- White: DSD64 / DSD128 / DSD256
Figure 7: RGB LED Indicator for Sampling Rate
Power Saving Mode
The UA Mini is active only when headphones are inserted and audio is playing. When headphones are disconnected or when playback is paused, the UA Mini automatically enters a power-saving mode to conserve energy.
Product Video
Video 1: SHANLING UA Mini Product Showcase
7. Maintenance & Care
- Keep the device dry and away from moisture.
- Avoid exposing the device to extreme temperatures.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Protect the USB-C connector and 3.5mm jack from dust and debris when not in use.
- Avoid bending or stressing the cable excessively.
8. Troubleshooting
- No Sound Output:
- Ensure your headphones are fully inserted into the 3.5mm jack.
- Verify that the UA Mini is securely connected to your source device's USB-C port.
- Check your source device's audio settings to confirm the UA Mini is selected as the output device.
- Increase the volume on your source device.
- Try connecting the UA Mini to a different source device or using different headphones to isolate the issue.
- LED Indicator is Off:
- Ensure headphones are connected and audio playback is active. The UA Mini enters power-saving mode when inactive.
- Poor Audio Quality/Distortion:
- Ensure the audio file being played is of good quality.
- Check for loose connections.
- Try a different pair of headphones.
- Ensure your source device's volume is not set too high, causing digital clipping.
9. User Tips
Based on common user experiences, here are some tips for optimizing your use of the SHANLING UA Mini:
- For optimal performance, ensure your source device's operating system and audio drivers are up to date.
- When using with smartphones, some devices may require enabling "OTG" or "USB Debugging" in developer options for the DAC to function correctly. Refer to your phone's manual for specific instructions.
- Experiment with different audio players or streaming services that support Hi-Res audio to fully appreciate the UA Mini's capabilities.
- While the UA Mini provides significant power, be mindful of your headphone's impedance. For very high-impedance headphones, a dedicated desktop amplifier might offer more headroom.
10. Warranty & Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the official SHANLING customer support channels. Keep your proof of purchase for warranty claims.
