1. Introduction
Thank you for choosing the Douk Audio C100 PRO. This device is a versatile mini Hi-Res Bluetooth music streamer, digital audio player, preamp, and DAC, designed to deliver exceptional audio quality and a user-friendly experience. Featuring an ESS9038 decoding chip, advanced Bluetooth connectivity with APTX-HD/LDAC support, and multiple input/output options, the C100 PRO is engineered for audiophiles seeking high-fidelity sound. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.
Front view of the Douk Audio C100 PRO unit.
2. What's in the Box
Carefully unpack the contents and ensure all items are present:
- 1 × C100 PRO Digital Player
- 1 × DC 12V Power Adapter
- 1 × 32G SD Card
- 1 × Optical Cable
- 1 × Remote Control (Note: AAA batteries not included)
Contents included in the Douk Audio C100 PRO package.
3. Product Overview
3.1 Front Panel
Detailed view of the C100 PRO front panel controls and display.
- VU Meter: Displays audio signal levels with a retro warm light.
- Power Button: Short press to power on/off.
- Menu Button: Access system settings and options.
- Return Button: Go back to the previous menu or screen.
- OLED Display Screen: 2.4-inch screen showing working status, track information, and settings.
- Infrared (IR) Receiver: For remote control signals.
- Navigation Buttons (Up/Down): Short press for previous/next song; long press for fast backward/forward.
- Play/Pause Button: Controls playback.
- SD Card Slot: Insert SD card for local music playback.
3.2 Rear Panel
Detailed view of the C100 PRO rear panel connections.
- RF Antenna Connector: For Bluetooth antenna.
- USB Input: Connect USB flash drives or external hard drives for music playback.
- Optical Input (OPT IN): Connect optical audio sources.
- Coaxial Input (COA IN): Connect coaxial audio sources.
- XLR Outputs (LEFT/RIGHT): Balanced audio outputs for professional connections.
- RCA Outputs (L/R): Unbalanced stereo audio outputs.
- DC 12V IN: Power input connector.
4. Setup
Follow these steps to set up your Douk Audio C100 PRO:
- Placement: Place the C100 PRO on a stable, flat surface away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the unit.
- Connect Antenna: Screw the provided Bluetooth antenna into the RF connector on the rear panel.
- Connect Audio Outputs:
- For balanced connections, connect XLR cables from the C100 PRO's XLR outputs to your amplifier or active speakers.
- For unbalanced connections, connect RCA cables from the C100 PRO's RCA outputs to your amplifier or active speakers.
- Connect Audio Inputs (Optional):
- To play music from an SD card, insert the card into the SD card slot on the front panel.
- To play music from a USB drive, insert the drive into the USB port on the rear panel.
- To connect an external digital audio source, use an optical or coaxial cable to connect to the respective input ports.
The C100 PRO supports various wireless and wired input sources.
The C100 PRO offers multiple audio output options for high-quality sound.
- Connect Power: Connect the DC 12V power adapter to the DC 12V IN port on the rear panel, then plug the adapter into a wall outlet.
- Power On: Press the Power button on the front panel or the remote control to turn on the unit. The OLED screen will illuminate.
5. Operating Instructions
5.1 Source Selection
Use the Menu button on the front panel or the remote control to navigate through input sources (Bluetooth, USB, SD Card, Optical, Coaxial). Select the desired input source for playback.
5.2 Bluetooth Playback
- Select 'Bluetooth' as the input source on the C100 PRO.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select 'Douk Audio C100 PRO' from the list to pair.
- Once paired, audio from your device will stream wirelessly to the C100 PRO.
5.3 USB/SD Card Playback
- Ensure your USB drive or SD card is formatted to FAT32 or exFAT.
- Insert the USB drive into the USB port or the SD card into the SD card slot.
- Select 'USB' or 'SD Card' as the input source. The device will scan the media.
- Use the navigation buttons to browse and select music files. Press Play/Pause to start or stop playback.
- The C100 PRO supports various music formats including ISO, DFF, DSF (up to DSD512), WAV (up to 32Bit/768kHz), and DTS.
5.4 Display Modes and Language
The 2.4-inch OLED screen provides clear information. The retro VU meter dynamically displays audio levels. The device supports 8 languages: Chinese, English, French, German, Japanese, Vietnamese, Spanish, and Russian. Navigate through the menu to change language settings or display modes.
The C100 PRO offers multi-language support and a unique VU meter display.
6. Maintenance
To ensure the longevity and optimal performance of your Douk Audio C100 PRO, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the unit. Do not use liquid cleaners, aerosols, or abrasive chemicals, as they may damage the finish or internal components.
- Ventilation: Ensure the unit has adequate airflow around it. Do not block ventilation openings.
- Environment: Keep the device away from extreme temperatures, humidity, dust, and direct sunlight.
- Power: Disconnect the power adapter from the wall outlet if the unit will not be used for an extended period.
7. Troubleshooting
If you encounter issues with your C100 PRO, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power adapter not connected or faulty outlet. | Ensure power adapter is securely connected to the unit and a working power outlet. Try a different outlet. |
| No sound output | Incorrect input/output selection; cables loose or faulty; amplifier/speakers off or muted. | Verify correct input source is selected on C100 PRO. Check all audio cable connections. Ensure amplifier/speakers are powered on and not muted. |
| Bluetooth not connecting | C100 PRO not in Bluetooth mode; device not discoverable; interference. | Select Bluetooth input on C100 PRO. Ensure Bluetooth is enabled on your source device and it's in pairing mode. Move closer to the unit. |
| USB/SD card not reading | Incorrect file format; unsupported file system; corrupted media. | Ensure media is formatted to FAT32 or exFAT. Verify music files are supported formats (WAV, FLAC, DSD, etc.). Try a different USB drive/SD card. Avoid subfolders for simpler navigation. |
| Remote control not working | Batteries low or inserted incorrectly; IR receiver blocked. | Replace batteries (AAA). Ensure line of sight between remote and IR receiver on the unit. |
8. Specifications
The Douk Audio C100 PRO boasts impressive technical specifications:
- Decoding Chip: ESS9038
- Bluetooth Chip: CSR8675 (Supports APTX-HD/LDAC)
- Bluetooth Version: 5.0
- Supported Audio Formats: ISO, DFF, DSF (up to DSD512), WAV (up to 32Bit/768kHz), DTS, and various other music formats.
- Distortion: 0.0005%
- Signal-to-Noise Ratio (SNR): 119dB
- Inputs: Bluetooth 5.0, Optical, USB, SD Card
- Outputs: S/PDIF Coaxial, Optical Digital (up to 24bit/192Khz/dop64), RCA, Balanced XLR
- Display: 2.4-inch OLED screen with VU Meter
- Dimensions (D x W x H): 4.17 x 6.61 x 2.09 inches (106 x 168 x 53 mm)
- Item Weight: 1.98 pounds (0.9 kg)
- Power Supply: DC 12V
- Supported Languages: Chinese, English, French, German, Japanese, Vietnamese, Spanish, Russian
8.1 C100 vs C100 PRO Comparison
Key differences between the C100 and C100 PRO models.
9. Warranty and Support
Douk Audio products are designed for reliability and performance. For warranty information and technical support, please refer to the warranty card included with your product or visit the official Douk Audio website. If you encounter any issues not covered in this manual, please contact Douk Audio customer service for assistance.
Douk Audio Official Store: Visit Douk Audio Store on Amazon
