1. Introduction
The Fosi Audio Q6 is a compact and versatile mini desktop Digital-to-Analog Converter (DAC) designed to enhance your audio experience. It serves as an external audio interface, converting digital audio signals from various sources into high-fidelity analog sound for your home stereo system, powered speakers, or headphones. With its advanced chipset and multiple input/output options, the Q6 delivers exceptional sound clarity and dynamic range in a space-saving design.
2. Product Features
- Versatile Mini DAC: Ideal as an external digital-to-analog converter for streamers, CD players, computers, TVs, and tablets. It seamlessly connects with home audio amplifiers, headphone amplifiers, and powered speakers to deliver excellent sound quality.
- Audiophile-Grade Chipset: Equipped with an AKM AK4493S DAC, XMOS XU316 audio processor, and OPA1612 op-amp. Supports PCM up to 32-bit/768kHz and DSD512, providing exceptionally clear audio for a truly immersive listening experience.
- Comprehensive Connectivity: Offers optical, coaxial, and USB inputs, along with RCA and sub outputs. Allows seamless connection to various digital sources including PCs, Macs, TVs, and CD players. Features simple plug-and-play setup for easy integration.
- Compact and Durable Design: Constructed from high-quality aluminum alloy, this compact DAC is stylish, robust, and space-efficient. Its sleek profile integrates naturally into any desktop environment, adding a refined touch while keeping your setup tidy.
- Superior Audio Performance: Delivers an excellent Signal-to-Noise Ratio (S/N) of 121dB, ultra-low distortion of 0.00012%, and an outstanding dynamic range of 121dB. It rivals or surpasses more expensive DACs, bringing audiophile-grade sound within easy reach.
3. Package Contents
Please check that all items are included in your package:
- Fosi Audio Q6 Mini Desktop DAC
- 2-in-1 USB-A/C to USB-C Cable
- User Manual
4. Product Overview
4.1 Front Panel
- Power Switch: Toggles the device on/off.
- Input Selector Knob: Rotates to select between Coaxial (COA), Optical (OPT), and USB inputs.
- Power/Sampling Format Indicator: Displays the current power status and active sampling rate.
4.2 Rear Panel
- DC 5V USB Power Input: Connects to a USB power source for device operation.
- USB Input: For connecting to computers, tablets, or smartphones for digital audio.
- Optical Input (OPT): For connecting digital audio sources via optical cable.
- Coaxial Input (COA): For connecting digital audio sources via coaxial cable.
- RCA Outputs (L/R): Analog audio outputs for connecting to amplifiers or powered speakers.
- Sub-Out: Dedicated output for connecting to a powered subwoofer.
5. Setup Instructions
- Power Connection: Connect the provided USB-C cable to the DC 5V USB port on the Q6 rear panel. Connect the other end to a suitable USB power adapter (not included) or a computer's USB port.
- Input Source Connection:
- For USB Audio: Connect the USB-C cable from the Q6 to your computer, tablet, or smartphone.
- For Optical Audio: Connect an optical cable from your source device (e.g., TV, CD player) to the OPT input on the Q6.
- For Coaxial Audio: Connect a coaxial cable from your source device to the COA input on the Q6.
- Output Connection:
- To an Amplifier or Powered Speakers: Connect RCA cables from the Q6's RCA outputs (L/R) to the corresponding inputs on your amplifier or powered speakers.
- To a Subwoofer: Connect a subwoofer cable from the Q6's Sub-Out to your powered subwoofer.
- Power On: Flip the power switch on the front panel to the ON position.
- Input Selection: Rotate the input selector knob on the front panel to choose your desired input source (COA, OPT, or USB).
6. Operating Instructions
- Power On/Off: Use the toggle switch on the front panel to turn the device on or off.
- Input Selection: Rotate the large knob on the front panel to cycle through the available input sources: Coaxial (COA), Optical (OPT), and USB. The selected input will be indicated by an LED.
- Volume Control: The Fosi Audio Q6 does not have a built-in volume control. Adjust the volume directly from your connected amplifier, powered speakers, or the source device (e.g., computer).
- Sampling Rate Indicator: The indicator light will show the current sampling format of the audio being processed.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Fosi Audio |
| Model | Q6 |
| Mounting Type | Desktop Mount |
| Interface Type | RCA, USB, Optical, Coaxial |
| Audio Output Mode | Stereo |
| DAC Chipset | AKM AK4493S |
| Audio Processor | XMOS XU316 |
| Op-Amp | OPA1612 |
| Max Sampling Rate (PCM) | 32-bit / 768 kHz |
| Max Sampling Rate (DSD) | DSD512 |
| Signal-to-Noise Ratio (S/N) | 121dB |
| Total Harmonic Distortion + Noise (THD+N) | 0.00012% |
| Dynamic Range | 121dB |
| Noise Floor | ≤2.8µV |
| Frequency Response | 20Hz-20kHz |
| Power Input | DC 5V (via USB-C) |
8. Troubleshooting
- No Sound:
- Ensure the Q6 is powered on and the correct input source is selected.
- Verify all audio cables (input, output) and the power cable are securely connected.
- Check the volume level on your connected amplifier, powered speakers, or source device.
- If using USB with a computer (especially Windows), ensure the correct audio output device ("Fosi Audio Q6" or similar) is selected in your sound settings. Also, check the sample rate settings in your computer's audio properties; setting it to a compatible rate (e.g., 32-bit, 384000Hz) can resolve issues.
- If using USB-C with a smartphone and experiencing intermittent sound, try a different USB-C cable or ensure your phone supports audio output over USB-C.
- Distorted Sound:
- Check all cable connections for any loose contacts.
- Ensure the sample rate settings on your source device are compatible with the Q6.
- Test with a different audio source or cable to isolate the problem.
- No Power:
- Verify the USB power cable is connected correctly and the power source is active.
- Try a different USB power adapter or USB port.
9. Maintenance
- Keep the device clean by wiping it with a soft, dry cloth.
- Avoid exposing the unit to excessive moisture, heat, or direct sunlight.
- Do not attempt to disassemble the unit, as this will void the warranty and may cause damage.
- Ensure proper ventilation around the device to prevent overheating.
10. Warranty and Support
Fosi Audio products are designed for reliability and performance. For any inquiries regarding firmware updates, technical assistance, or warranty claims, please contact Fosi Audio customer support through their official channels.
Please refer to the official Fosi Audio website for the most up-to-date warranty information and support resources.
Note: For an enhanced user experience with the Q6, updated firmware is available. Please contact us if you wish to download it.
