1. Introduction
Thank you for choosing the Hidizs S9 Pro Plus Martha USB C DAC Dongle. This portable digital-to-analog converter (DAC) and amplifier is designed to enhance your audio experience across various platforms, delivering high-fidelity sound. This manual will guide you through the setup, operation, and maintenance of your device.
2. Package Contents
Please verify that all items listed below are included in your package:
- S9 Pro Plus Martha Unit ×1
- Type-C to Type-C Cable ×1 (Ensure the plug with the logo side faces up when connecting)
- Type-C to USB-A Adapter ×1
- User Manual ×1
- Warranty Card ×1
Image: Contents of the S9 Pro Plus Martha package.
3. Product Overview
The S9 Pro Plus Martha is a compact and powerful USB C DAC dongle. It features both balanced (4.4mm) and single-ended (3.5mm) audio outputs, along with physical volume controls and multiple digital filter options for a customized listening experience.
Image: Front view of the Hidizs S9 Pro Plus Martha DAC Dongle.
3.1 Key Features
- Professional Circuit Architecture: Utilizes the ES9038Q2M DAC chip, supporting up to 32-bit/768 kHz PCM sampling rate and DSD512.
- High Performance: Features a Signal-to-Noise Ratio (SNR) of up to 128 dB and ultra-low Total Harmonic Distortion plus Noise (THD+N) of -120 dB.
- Powerful Output: Delivers 138mW+138mW@32 Ω (3.5mm SE) and 180mW+180mW@32 Ω (4.4mm BAL), capable of driving various IEMs and headphones.
- Six Digital Filter Options: Customize your sound profile with 6 selectable digital filters, indicated by different RGB lighting effects.
- Wide Compatibility: Supports Windows, Mac OS, Android, iOS, and Harmony OS via a standard Type-C data interface.
- Durable Construction: Crafted from aviation-grade aluminum alloy with CNC five-axis machining.
Image: The ES9038Q2M DAC chip, central to the device's audio processing.
Image: Performance metrics highlighting high-resolution audio support and low distortion.
3.2 Dimensions
Image: Physical dimensions of the S9 Pro Plus Martha.
4. Setup
Follow these steps to connect your S9 Pro Plus Martha to your audio source and output device.
- Connect to Source Device: Use the provided Type-C to Type-C cable to connect the S9 Pro Plus Martha to your smartphone, tablet, or computer. If your source device uses a USB-A port, use the included Type-C to USB-A adapter. Ensure the cable's logo side faces up for proper connection.
- Connect Audio Output: Plug your headphones or in-ear monitors (IEMs) into either the 3.5mm single-ended port or the 4.4mm balanced port on the S9 Pro Plus Martha.
- Power On: The device will automatically power on when connected to a compatible source device. The LED indicator will illuminate.
- Adjust Volume: Begin playback on your source device and adjust the volume using the physical buttons on the S9 Pro Plus Martha. Start with a low volume and gradually increase to a comfortable listening level.
Image: Multi-platform compatibility of the S9 Pro Plus Martha.
Image: Examples of the S9 Pro Plus Martha connected to a laptop and a smartphone.
5. Operating Instructions
5.1 Volume Control
The S9 Pro Plus Martha features dedicated physical buttons for volume adjustment. Use these buttons to precisely control the output volume to your headphones or IEMs.
5.2 Digital Filter Options
The device offers six digital filter effects to tailor the sound to your preference. To cycle through these filters, simultaneously press both volume buttons. Each filter corresponds to a different RGB lighting visual effect on the device.
Image: Digital filter options and their corresponding RGB indicators.
The LED indicator also displays the current sampling rate:
- Red: PCM 352.8/384 kHz
- Green: PCM 44.1/48/88.2/96 kHz
- Blue: PCM 176.4/192 kHz
- Yellow: DSD64/128
- Purple: DSD256/512
- White: PCM 705.6/768 kHz
6. Maintenance
To ensure the longevity and optimal performance of your S9 Pro Plus Martha, please follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the device. Avoid using liquid cleaners or solvents, as they may damage the finish or internal components.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device with care. Avoid dropping it or subjecting it to strong impacts.
- Connectivity: Always insert and remove cables gently to prevent damage to the ports.
7. Troubleshooting
If you encounter any issues with your S9 Pro Plus Martha, please refer to the following common problems and solutions:
- No Sound Output:
- Ensure the S9 Pro Plus Martha is securely connected to both the source device and your headphones/IEMs.
- Check the volume levels on both the S9 Pro Plus Martha and your source device.
- Verify that the correct audio output device is selected in your source device's sound settings (e.g., 'Hidizs S9 Pro Plus' or similar).
- Test with different headphones/IEMs and a different source device to isolate the problem.
- Low Volume or Distortion:
- Increase the volume on the S9 Pro Plus Martha and your source device.
- Ensure your audio files are not corrupted or of low quality.
- Check if your headphones/IEMs are properly seated in the output jack.
- If using high-impedance headphones, ensure the device is capable of driving them adequately. The S9 Pro Plus Martha is designed to drive up to 250 ohm headphones effectively.
- Device Overheating:
- It is normal for the device to become warm during extended use, especially when driving demanding headphones.
- If the device becomes excessively hot and experiences a sudden drop in gain, this may indicate a thermal protection feature. Disconnect the device and allow it to cool down before resuming use.
- Ensure the device is not covered or placed in an enclosed space that restricts airflow.
- Filter Switching Issues:
- Ensure you are pressing both volume buttons simultaneously to cycle through the filters.
- Observe the RGB lighting to confirm filter changes.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Hidizs |
| Model Number | S9 PRO PLUS |
| DAC Chip | ES9038Q2M |
| PCM Sampling Rate | Up to 32-bit/768 kHz |
| DSD Support | DSD64/128/256/512 |
| Signal-to-Noise Ratio (SNR) | Up to 128 dB |
| THD+N | -120 dB |
| 3.5mm SE Output Power | 138mW+138mW @ 32 Ω |
| 4.4mm BAL Output Power | 180mW+180mW @ 32 Ω |
| Interface Type | USB Type-C |
| Compatibility | Windows, Mac OS, Android, iOS, Harmony OS |
| Material | Aluminum Alloy |
| Product Dimensions | 2.32 x 0.71 x 0.31 inches (55 x 25 x 11 mm) |
| Item Weight | 0.6 ounces |
9. Warranty Information
The Hidizs S9 Pro Plus Martha USB C DAC Dongle comes with a limited manufacturer's warranty. Please refer to the included Warranty Card in your package for specific terms, conditions, and duration of the warranty. Keep your proof of purchase for any warranty claims.
10. Customer Support
For further assistance, technical support, or inquiries not covered in this manual, please contact Hidizs customer support through their official website or the contact information provided on your warranty card. Please have your product model and purchase details ready when contacting support.
