8. How to use the BTR15 as a DAC for the computer in PC mode?

PC mode: Toggle the switch to the top. The BTR15 will enter the USB decoding mode for desktop devices, and can be powered through USB..

The BTR15 can be used as a USB DAC for computers which can support up to 384K/DSD256 sampling rate in UAC 2.0 mode.


1. When the BTR15 is under UAC 1.0 mode, no driver is required. Just select the BTR15 as the default audio output device after connecting it to the computer.

2. Windows supports UAC 2.0 mode: When first connecting, please go to our website to download the USB DAC driver, and install it as the instruction to enable the USB DAC function.

FiiO USB DAC driver download: Click here

3. The following instruction takes Windows 7 as an example to introduce how to install the USB DAC driver on the computer, and use the DAC to play songs: Click here


1. MacBook runs driver-free. Just directly choose the BTR15 as the output device.

2. How to use the FiiO device as a USB DAC on a MAC: Click here