Does Headphone (1) Pro support USB-C audio and 3.5mm Aux-In wired audio connections? September 29, 2026 06:24 Updated Supported. Both USB-C audio and 3.5mm Aux-In wired audio connection are supported. Related articles What audio specifications are supported by Headphone (1) Pro in wired mode? What functions are available when using the USB-C audio cable or 3.5mm Aux-In audio cable? What audio formats does Headphone (1) Pro support? Does Headphone (1) Pro support dual connection? Why does the audio not get recognized when I plug in the Type-C audio cable while the headphones are powered off and then turn them on?