Quote:
Originally Posted by Quoth
Only an analogue connection is a dedicated "audio port".
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Thats exactly my point. USB audio has several modes. Audio Accessory Mode spits out an actual analog audio signal over the USB port. This is often what cheaper accessories use because the audio hardware in the device continues to do the heavy lifting of conversion. USB ADC Mode sends a digital audio signal out over the port and offloads a lot to the USB device.