Using a USB on the go (OTG) cable to turn external audiophile DACs into host devices has been a bit of a workaround for a while. USB Audio Classes predate USB Type-C and work with both the new and legacy connectors.ĭigital data for both audio and function controls are transmitted over the data (D+ and D-) USB pins, although there are a few different specifications that define exactly what information to transmit over those pins. This specification also determines a USB device’s compatibility with a range of specific USB functions and communication types suitable for audio. The USB Audio Class specification allows a USB device to identify itself as an audio peripheral.
