FiiO K9 Pro ESS Desktop USB DAC and Headphone Amplifier with Bluetooth User Manual
Page 2
English
Desktop DAC and Amplifier
Buttons and Ports Labeled
1. XLR4 balanced headphone output
2. 6.35mm headphone output
3. 4.4mm balanced headphone output
4. RGB indicator light
5. Volume knob
6. Input indicator light
7. Output selection switch
8. Gain switch
9. Input selection button
10. Multifunction button
11. Power input
12. Power switch
13. Bluetooth antenna port
14. Coaxial input
15. USB input
16. Optical input
17. 4.4mm balanced line-in
18. Single-ended line-in
19. Single-ended line-out
20. Balanced line-out
Notes:
1. RGB indicator light
*The RGB light in ON state stands for working while in OFF state stands for sleeping.
*Different RGB light colors stand for different sampling rates and Bluetooth codecs. For more
details, please visit our website.
2. Output selection switch