Note: When you click the links below to download the firmware, it indicates that you
have already read and agreed to the Open source licenses.
FiiO USB Audio driver
[Windows system]
Before first connecting, please go to our website to download the DAC driver(FiiO USB
Audio driver: Click here), and install it as the instruction to enable the USB DAC function.
[Macbook]
Macbook does not need to install the driver.
KA3 V2.0.1 firmware content:
1. Optimize software configuration;
2. Version number change.
KA3 V2.0.1 firmware download link: Click here
KA3 V2.0 firmware content:
1. Added indicator light off memory function:
Single or memory shutdown can be set in the FiiO Control App. Single shutdown will light up
the indicator light after reconnection; memory shutdown will not light up the indicator light
after reconnection until the user re-modifies the settings.
2. Added dynamic power consumption adjustment function:
After turning on this function, KA3 will dynamically adjust the power consumption of the
unit according to the sampling rate of the song being played. When playing low-sampling
rate songs, it will effectively reduce power consumption, save the power of the playback
end and reduce the heat of the unit.
3. Added hardware mute switch settings:
If this switch is turned off, the POP sound of the internal music will be optimized and
reduced, but there may still be a POP sound under certain circumstances. Users can
choose to turn it on or off according to their usage habits.
KA3 V2.0 firmware download link: Click here