Note: The KA15 could not be controlled via the iOS version FiiO Control APP. But after adjusting the setting in KA15 or in Android FiiO Control, the settings will be saved.
1.Please update the FiiO Control APP to latest version first.(Download link: Click here)
2.Connect the KA15 to the Android mobile phone via the USB c to c adapter. In the FiiO Control app 'My product' page,choose KA15 to enter KA15 control page.