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Step 6: 

Open the audio application, play and enjoy!

Note: 

If you need to replace the input Bluetooth device, please           

           disconnect the connected Bluetooth device in advance, or 
           restart the K2. When the K2 is Restart, Bluetooth will not 
           automatically connect back.

After successful connection, adjust the volume, bass and treble of 
the K2, then you can enjoy HiFi stereo music.

Troubleshooting/QA

1: How do I power the K2?

• Please connect the Micro-USB cable to the AC adapter or 
  device’s USB port, and then connect the Micro-USB cable to 
  the K2. 

Note: 

You can still connect the PC-USB cable to your PC's USB 

            port and then connect it to the K2's USB interface for 
            power, but performance may not be stable.

2: My Bluetooth device can’t pair with K2?

• Make sure that K2 is powered on and the indicator light   
  flashing blue.
• Make sure that K2 is not paired with other devices.
• Make sure that the distance between your device and K2 is not 
  too long, make your device close to K2 have to try.
• Make sure there are no obstacles between your device and K2, 
  obstacles will affect the Bluetooth operation distance.
• Please try to change another Bluetooth audio source to test.
• Restart the K2 and then try to connect again, use another 
  brand of mobile phone to have a try.

Note:

 If your Bluetooth device still can’t pair with K2 after 

  replacing another brand of mobile phones, please contact us to 
  solve it immediately.

3: Why Bluetooth is intermittent?

• Use another Bluetooth device to have a try.
• Ensure that there is no interference from other electronic 
  equipment between the K2 and the audio source.
• Put your device close to the K2.
• Replug the power adapter.

4: Why is there no sound from Bluetooth?

• Make sure the volume of the Bluetooth device is not 0, please 
  raise the volume of the Bluetooth device.
• Make sure that K2 is not paired with other devices.
• Make sure the output device is properly connected.
• Please try with another Bluetooth device.

Note:

 If there is still no sound from Bluetooth after trying with 

            another Bluetooth device, please contact us to solve it 
            immediately. 

5: How to distinguish Mode Switch and Volume Control?

• Power switch means short press the multi-function knob 
  (Volume Control/Mode Switch) for one time to select one mode. 
  Adjusting the volume means turning the volume control knob 
  clockwise to adjust the volume.

6: Why do I get endless white noise?

• Please check that your input device is using Dolby/DTS audio, 
  please switch off Dolby/DTS audio and try again.

Summary of Contents for DAC-K2

Page 1: ...Fosi Audio DAC K2 User Manual Power Blue BT Green Coa White USB Red Opt Mode volume Treble Bass ...

Page 2: ...and RCA outputs Fosi Audio K2 ensures exquisite musicality accurate and realistic phasing and reproduction of the original sound Input Type Output Type Chipset Optical Coaxial Sampling Rate Power Supply THD S N Dimensions H W D Net Weight Bluetooth 5 0 USB Optical Coaxial 3 5mm 1 8 Headphone Jack RCA Bluetooth Sampling Rate 16Bit 48kHz USB Sampling Rate 16Bit 192kHz 24Bit 96kHz 24Bit 192kHz Headph...

Page 3: ...uetooth Antenna Interface Bluetooth Antenna Coaxial Input L R Output Input DV 5V RF PS E 3 5mm 1 8 Headphone Output Bass Control Treble Control Multi function Knob 1 Volume Control 2 Mode Switch Input Indicator Light Power Switch Power Blue BT Green Coa White USB Red Opt Mode volume Treble Bass ...

Page 4: ... cable Micro USB cable Headphones Step 2 Connect the Micro USB cable to the AC adapter or device s USB port then connect the Micro USB cable to the K2 Step 3 Connect the K2 to the PC via the PC USB cable Step 4 Connect the headphones to the 3 5mm 1 8 headphone jack and turn down the volume control to lowest level PC PC USB Cable Micro USB Power Cable L R Output Input DV 5V RF PS E ...

Page 5: ...n the front panel upwards and the input indicator light for a certain mode will illuminate Note2 There is a memory function to the mode which means after you turn on the power switch again the K2 will default to the mode you selected when you last ended up using it and the input indicator will show the indicator color of the corresponding mode Note3 Multi function Knob Volume Control Mode Switch V...

Page 6: ......

Page 7: ...Connect the headphones to the 3 5mm 1 8 headphone jack and turn down the multi function knob Volume Control Mode Switch to lowest level Note Before connecting the power supply please turn down the volume control bass control and treble control to the lowest level always to the left to avoid your hearing or your headphone from damage Step 4 Toggle the power switch on the front panel upwards to turn...

Page 8: ...ll connect the PC USB cable to your PC s USB port and then connect it to the K2 s USB interface for power but performance may not be stable 2 My Bluetooth device can t pair with K2 Make sure that K2 is powered on and the indicator light flashing blue Make sure that K2 is not paired with other devices Make sure that the distance between your device and K2 is not too long make your device close to K...

Page 9: ...sure that K2 is not paired with other devices Make sure the output device is properly connected Please try with another Bluetooth device Note If there is still no sound from Bluetooth after trying with another Bluetooth device please contact us to solve it immediately 5 How to distinguish Mode Switch and Volume Control Power switch means short press the multi function knob Volume Control Mode Swit...

Page 10: ...a 5V adapter or to PC s USB 3 0 port for power Higher voltages may cause instability 8 USB Device is not recognized on Windows Select Start then type device manager in the Search box and then select Device Manager Expand Universal Serial Bus controllers Press and hold or right click a device and select Uninstall Repeat for each device Once complete restart your computer Your USB controllers will a...

Page 11: ...he lower right corner open Volume Mixer click on the icon of the device SPDIF Fosi Audio K2 to open the Properties click the Advanced select 24Bit 96000Hz for maximum sound quality output 12 Why do I get an intermittent sound Please switch the USB port to USB 3 0 or back USB port and try again as some USB ports have unstable data transmission Please replace the PC USB cable and retest contact us f...

Page 12: ...s have an 18 month limited warranty on parts and labor from the date of purchase Please contact us if you have any problems About Fosi Audio 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 produ...

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