10. How to use the K19 as a USB DAC for mobile phones?
The K19 does not have a battery, and is powered by an external power supply. You can purchase an OTG adapter cable to connect to an Android phone, an Apple phone or a player.
Android phone
1. K19 input setting: Switches to USB working mode using menu knob
2. K19 output setting: switch to the corresponding output port according to the interface used, switch to [PO] or[PO+PRE]for the front panel, switch to[PO+PRE], [PRE] or [LO] for the rear panel.
3. Connect the mobile phone and K19 through the type-C to type-C cable comes with K19 or other OTG cable to use.
[Note] If there is no sound after you connect, you need to pay attention to the following points:
1. Mobile phone playback software settings. If there is a USB output, it needs to be turned on, and some devices have to turn off the USB output to have sound.
2. Confirm whether the mobile phone developer mode has enabled USB debugging. On the mobile phone, you need to turn on USB debugging, turn on "Developer Options", and then turn on the "USB debugging" or "OTG" function.
3. Confirm that the transfer cable supports the OTG function, and whether the direction of the cable is reversed.
4. Since the USB audio of various brands of mobile phones is not standardized at present, FiiO does not guarantee full compatibility. According to the above connection method, if it is not supported, it is recommended to try other mobile phones or connect to the computer DAC to rule out whether the hardware of some devices is bad (such the probability of the situation is small), if it is not possible to connect to the computer, consider repairing or replacing the machine.
iPhone/iPad
It is necessary to purchase a Lightning to Type C data cable with OTG function (such as LT-LT1) to connect K19 and iPhone/iPad/iPod(You could use the type-C to type-C cable comes with the K19 if you are using iPhone 15 or above device.), and enjoy high-quality music by playing songs.
[Note]
When the iOS device is decoding, adjusting the volume of the iOS device is invalid.
Does K19 support driverless function?
Yes. In the system setting menu of the K19, you could switch U-AUDIO option to UAC 1.0. PS5, Switch and other drive-free devices can be supported.
