Third party applications will be automatically disabled while FiiO Music
app will be auto-enabled. It can be switched to other modes on the
drop-down or settings menu.
AirPlay
The JM21 can be connected to Apple devices, receiving audio signals
transmitted from them.
USB DAC mode
In USB DAC mode, the JM21 can be connected to other devices like a
computer, working as a USB DAC/Amp. It can be switched to other
modes on the drop-down or settings menu.
Notes: when the JM21 is going to work in the USB DAC mode for the
first time, FiiO's exclusive USB DAC driver is required. Please download
it on our website and follow relevant instructions to install it.
Bluetooth Receiving mode
The JM21 can be connected to Bluetooth transmitting devices like a
mobile phone, working as a Bluetooth DAC/Amp. It can be switched to
other modes on the drop-down or settings menu.