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Reply:11 Read:17843   2022-07-09 17:00:46

USB DAC driver

FiiO USB DAC driver: Click here

How to update the firmware: Click here

Updated on 2022-07-09

Firmware download link: 

  1. Install the 'erase' firmware for the KA1 in the computer first. Download link: Click here

  2. Then install the V1.21 firmware for the KA1. Download link: Click here

Changes and improvements about new firmware are as follows :

1. Added support for FiiO Control App;

2. Added support for in-line control microphones;

3. Added the setting of turning on/off indicator light;

4. Added the function of USB mode switching.


1.FiiO Control ios version does not support the control for KA1.

2. In-line microphone function could be enabled via FiiO Control app. (The function will be set after reconnect.)

Some mobile phones(Like Hwawei, iPhone) do not support calling via microphone in the headphone of KA1.

When in-line microphone function is on,  DSD native mode would work only when using headphone without microphone.

3. USB 1.0 and USB 2.0 mode could be switched via FiiO Control app. (The function will be set after reconnect.)

USB2.0 is set as default.

When using with device like switch, you could switch to USB 1.0 mode first.

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