1. Introduction
The KGUSS FX-Audio DS07 is a high-fidelity Digital-to-Analog Converter (DAC) designed to enhance your audio experience. It features an ES9068AS DAC chip, XMOS XU216 2nd generation 16-core processor, and Bluetooth 5.1 connectivity. The DS07 supports high-resolution audio formats including 32-bit/768kHz PCM, DSD512 native, and MQA full decoding via USB. It also offers 24-bit/192kHz PCM, DSD64 (DoP), and MQA rendering via coaxial and optical inputs. With its balanced XLR and RCA outputs, remote control, and a 1.54-inch full-color LCD screen, the DS07 provides versatile and precise audio conversion for various applications.
2. What's in the Box
Carefully unpack the contents and ensure all items are present:
- FX-AUDIO- DS07 DAC Unit
- Remote Control
- DC Power Cable
- USB Cable
- User Manual
- Bluetooth Antenna
Image: Contents of the DS07 package, including the DAC unit, remote control, various cables, and the user manual.
3. Product Overview
3.1 Front and Rear Panels
Familiarize yourself with the layout of the DS07 DAC. The front panel features the display, control knob, and IR receiver. The rear panel provides all input and output connections.
Image: Detailed view of the DS07's front panel with its display and control knob, and the rear panel showing all input and output ports.
3.2 Display and Controls
The 1.54-inch full-color LCD screen provides essential information such as input source, output type, sampling rate, audio format (PCM, DSD, MQA), and volume level. The multi-function knob allows for navigation through menus and volume adjustment.
Image: Explanation of the DS07's screen display, detailing input, output, signal specification, signal format, and volume values.
4. Setup
4.1 Power Connection
- Connect the provided DC power cable to the 'AC 100-240V' input on the rear panel of the DS07.
- Plug the other end of the power cable into a suitable wall outlet.
4.2 Input Connections
The DS07 supports multiple digital audio inputs:
- USB Input: Connect your computer or digital media player to the 'USB' port on the DS07 using the supplied USB cable. For optimal performance with Windows systems, a custom driver may be required, available for download from the FX-AUDIO- website.
- Optical Input: Connect a device with an optical digital output (e.g., CD player, TV) to the 'OPTICAL' port.
- Coaxial Input: Connect a device with a coaxial digital output to the 'COAXIAL' port.
- Bluetooth Input: Attach the Bluetooth antenna to the 'BT ANT' connector. Enable Bluetooth on your smartphone, tablet, or computer and search for 'FX-QS 5.0' to pair.
4.3 Output Connections
Connect the DS07 to your amplifier or active speakers using either RCA or XLR balanced outputs:
- RCA Output: Use RCA cables to connect the 'RCA L/R' outputs to the corresponding analog inputs on your amplifier or active speakers.
- XLR Balanced Output: Use XLR cables to connect the 'XLR L/R' outputs to the corresponding balanced inputs on your amplifier or active speakers. The XLR output can also function as a separate preamplifier.
Image: Connection diagrams for input devices (Bluetooth, USB) and output devices (RCA, XLR) with the DS07 DAC.
5. Operating Instructions
5.1 Power On/Off
Press the power button on the remote control or the multi-function knob on the front panel to turn the unit on or off.
5.2 Input Selection
Rotate the multi-function knob or use the 'IN' button on the remote control to cycle through available input sources: USB, BT (Bluetooth), OPTICAL, COAXIAL.
5.3 Volume Control
Rotate the multi-function knob or use the 'VOL+' / 'VOL-' buttons on the remote control to adjust the output volume (range 0-99).
5.4 Menu Navigation
Press the multi-function knob or the 'OK' button on the remote control to enter the main menu. Rotate the knob or use the Up/Down arrows on the remote to navigate through menu options. Press 'OK' to select an option.
Menu options include:
- INPUT: Selects the audio input source.
- OUTPUT: Selects the audio output port (RCA only or XLR only).
- BT REMATCH: Initiates Bluetooth re-pairing. When confirmed, the DS07 will disconnect the current Bluetooth device and re-enter search pairing status.
- FILTER SET: Choose from 3 digital filter modes (FILTER-1, FILTER-2, FILTER-3) to customize the sound characteristics.
- BRIGHTNESS: Adjusts the display brightness (25%, 50%, 75%, 100%).
- DIMMER: Sets the display auto-off time (15 seconds, 45 seconds, 5 minutes, CONTINUED).
- RESET: Resets the unit to factory default settings.
5.5 Remote Control Usage
The remote control provides full functionality for the DS07. Ensure the remote is pointed towards the unit's IR receiver. The effective distance is approximately 8 meters. For first-time use, press the 'DAC' button on the remote to pair it with the DS07.
Image: The DS07 DAC unit shown with its accompanying remote control.
Video: A demonstration of the FX-Audio DS07 DAC's input selection and menu navigation using the control knob, including Bluetooth re-pairing functionality.
6. Maintenance
To ensure the longevity and optimal performance of your DS07 DAC, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
- Placement: Place the unit on a stable, flat surface away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the unit.
- Power: Disconnect the power cable from the wall outlet if the unit will not be used for an extended period.
- Handling: Handle the unit with care to prevent physical damage.
7. Troubleshooting
If you encounter issues with your DS07 DAC, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Incorrect input/output selection; cables not connected properly; volume too low; connected amplifier/speakers off. | Verify input source on DS07 matches your device. Check all audio cable connections. Increase volume. Ensure connected audio equipment is powered on and set to the correct input. |
| Bluetooth pairing issues | Device not in pairing mode; incorrect device selected; interference. | Ensure DS07 is in Bluetooth input mode. Use the 'BT REMATCH' function to re-enter pairing mode. Check your source device's Bluetooth settings. Move closer to the DS07. |
| Intermittent audio or clicking sound when input stops | DS07 entering standby mode immediately when no input signal is detected. | This behavior is by design for power saving. If this is disruptive, ensure a continuous audio signal is provided or consider adjusting the source device's audio settings to prevent frequent signal interruptions. |
| Remote control not working | Batteries depleted; remote not paired; obstruction. | Replace batteries. Ensure the remote is paired by pressing the 'DAC' button. Remove any obstructions between the remote and the DS07. |
| Display is too bright/dim or turns off too quickly | Brightness/Dimmer settings are not optimal. | Navigate to the 'BRIGHTNESS' and 'DIMMER' settings in the menu to adjust to your preference. |
If the problem persists after trying these solutions, please contact customer support.
8. Specifications
Detailed technical specifications for the KGUSS FX-Audio DS07 DAC:
Image: Comprehensive table listing the technical specifications of the DS07 DAC.
| Feature | Detail |
|---|---|
| Brand | KGUSS (Manufacturer: FX-AUDIO-) |
| Model | DS07 |
| DAC Chip | ESS ES9068AS |
| USB Processor | XMOS XU216 |
| Bluetooth Chip | QCC5125 |
| Inputs | USB, Optical, Coaxial, Bluetooth 5.1 |
| Outputs | RCA (L/R), XLR Balanced (L/R) |
| USB Sampling Rate | PCM up to 32-bit/768kHz, DSD512 Native, MQA Full Decoding |
| Optical/Coaxial Sampling Rate | PCM up to 24-bit/192kHz, DSD64 (DoP), MQA Rendering |
| Bluetooth Protocols | LDAC, AAC, SBC, APTX, APTX LL, APTX HD |
| THD+N | As low as 0.00015% |
| Dynamic Range | 120dB |
| SNR | Greater than 120dB |
| Frequency Response | 10Hz-50kHz |
| Display | 1.54-inch Full Color LCD Screen |
| Material | Aluminum CNC precision sandblasting process |
| Dimensions (L x W x H) | 6.93"L x 4.92"W (176mm x 125mm x 80mm) |
| Power Dissipation | Move: 5W, Standby: <0.5W |
9. Warranty and Support
9.1 Warranty Information
This product comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package or visit the official FX-AUDIO- website for detailed warranty terms and conditions. Keep your purchase receipt as proof of purchase for any warranty claims.
9.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or the manufacturer directly. Contact information can typically be found on the product packaging, the official FX-AUDIO- website, or through your point of purchase.