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Q: Why do loudspeakers make a lot of electric noise?

A: 

If you are not using the original factory standard power supply, please replace 

the power supply before testing. Many power supply in the market have large 

interference coefficient, which will cause a lot of current sound.

Q: Why the speaker has drone when I just plug in the input cable but 

don’t connect the sound sources?

A: 

If you use unshielded signal lines, there will be interference signals entering the 

power amplifier. If you hate the sound, you are advised to use the shielded signal 

lines or unplug the signal lines.

Q: Why there is no sound when PC-USB connects to PC?

A: 

First press the PC-USB operation to confirm whether the digital playback output 

has been selected. If still no sound, you can restart the computer and repeat the 

operation again.

Q: USB Device not recognized on Windows?

A: 

1. Select Start, then type device manager in the Search box, and then select 

Device Manager;

2. Expand Universal Serial Bus controllers. Press and hold (or right-click) a device 

and select Uninstall. Repeat for each device;

3. Once complete, restart your computer. Your USB controllers will automatically 

install.

6

7

Fosi Audio designs and builds innovative audio products with all your music in mind. 

Great sound, simple but elegant designs, high-quality materials, and truly useful 

features are what Fosi Audio is about. We sincerely hope you get as much 

enjoyment from our products as we’ve had creating them!

[email protected]

www.fosiaudio.com

About Fosi Audio

Join Us

Fosi Audio offers a complete product portfolio, suitable for opening retail stores in 

major cities all over the world. Once you become a certified retailer, you will be 

integrated into the exclusive selection of distributors of Fosi Audio products, and 

you will receive comprehensive technical support and Training.

For more information, please contact us at [email protected]

Parametric

Frequency 

Response

20Hz-20KHz(

±

3dB)

Optical/Coaxial 

Input Sampling Rate

Opt-192kHz/24Bit

Coa-192kHz/24Bit

THD

-113dB (0.0002%)

PC-USB System 

Support

Windows all

/MAC/Linux

SNR

123dB

Input

Interface

Bluetooth, USB, OPT, 

COA

Bluetooth Input

Bluetooth 5.0

Output Interface

RCA

PC-USB Input 

Sampling Rate

48kHz/16Bit

Work Voltage

DC 12V

Size

4.53*4.33*1.57 in

Содержание DAC-Q7

Страница 1: ... sure to read carefully this instruction manual and keep it safe for further reference Contents Introduction Package List Features Panel Introduction How to use it Troubleshooting Parametric About Fosi Audio 2 2 2 3 5 5 6 7 Join Us 7 Quick Setup 4 Cleaning 5 ...

Страница 2: ... better with your audio Bluetooth 5 0 Wireless Audio Built with high end Qualcomm QCC3003 5 0 chip for achieving enhanced technology leading to a quicker transmission and more stable connection with 49ft 15M wide range Excellent OP275 Amp This new front end design combines both bipolar and JFET transistors to attain amplifiers with the accuracy and low noise performance of bipolar transistors and ...

Страница 3: ... play no special software is needed For PC just click the sound icon in your notification area click the Select playback device option select the playback device USB audio DAC For Mac under System Preferences Sound select USB audio DAC The SPDIF light will be on after the Q7 receives the coaxial and optical signals if it is not on check the input signal How to use it Your DAC components are not wa...

Страница 4: ...lect Uninstall Repeat for each device 3 Once complete restart your computer Your USB controllers will automatically install 6 7 Fosi Audio designs and builds innovative audio products with all your music in mind Great sound simple but elegant designs high quality materials and truly useful features are what Fosi Audio is about We sincerely hope you get as much enjoyment from our products as we ve ...

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