1.Quick start guide, DSP, DAC driver download link of K17

Quick start guide download link

Click here

FiiO USB DAC driver download link

Click here

K17&K19 Dedicated DSP download link

Windows version: Click here

MAC version: You could also search and download 'FiiO DSP' from the APP store.

FiiO Control App download link

Android version: Click here

iOS version: You could search and download 'FiiO Control' from the APP store.