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The DX220 can work as a USB DAC for Windows PC,
Mac computer, and Linux computer. It is driver free on
a Mac computer and Linux computer. For Windows PC,
one can download the driver from iBasso.com and install
it following the steps included with the download, before
using the USB DAC function. The DX220 supports up to
32bit/384kHz PCM, and native DSD up to 512x when be
used as a USB-DAC.
USB DAC: