One of the issue I had with Nintendo Switch is the headphone output quality. Due to how compact it is and the fact that it houses an active cooling fan inside the same housing, caused audible hiss to carry over to the headphone output. The issue, in particular, made worse in sensitive IEM, while Switch itself isn’t capable at driving full size headphone very well. The use of standard USB-C port in Switch gave me some hope, but USB audio support isn’t there at launch.
Then the 4.0 update came and some big features finally arrive. Important one like system transfer finally there and addition of video capture allow sharing great moment as easy as holding the screenshot button. But the most important feature for me is not mentioned anywhere in the changelog and it is the USB audio support. Yes! Switch finally allow you to use external USB DAC.