FiiO

K11&K11 R2R 12

• What should I do if the K11/K11 R2R is abnormal?
• Operation introduction for K11 and K11 R2R
• K11/K11 R2R signal input, output, gain description
• How to use the K11/K11 R2R as a USB DAC for mobile phones?
• How to use the K11/K11 R2R as a USB DAC for computer?

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K17 24

• Quick start guide, DSP, DAC driver download link of K17
• How to upgrade the firmware for K17?
• How to control K17 via FiiO Control APP?
• What should I do if the K17 is abnormal?
• Can Qobuz connect be added for K17 in future firmware update?

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K19 3

• Quick start guide, DSP download link of K19
• What should I do if the K19 is abnormal? And safety instructions
• K19 accessory list, power supply instructions