I have an HifiBerry AMP2, which is a RPi hat that lets the RPi act as an audio amplifier. Now I want to connect my PC (Mac) to the RPi, but it does not have a line- or mic-in. So I am wondering if I can make the RPi act as an external USB-soundcard, i.e. connect the RPi via USB to my PC and have the PC recognize it as an external soundcard.
Is that possible?