Digital headphones are headphone products that are directly linked using a digital interface. It is similar to the design of the most common portable earbuds and earphones, except that the 3.5mm interface is no longer used, but the data cable interface of the mobile phone is used as the interface of the earphone, such as the Micro USB interface of Android devices or the Lightning interface used by IOS devices. Digital headphones come with DAC and amplifier, can play ultra-high bit rate lossless music, while the mobile phone only does digital signal output and power supply, and the headset directly does decoding and amplifying the signal. Of course, there's more to it than that. What comes next is important. At present, in addition to some domestic HiFi mobile phones, other smart phones only support 16bit\/44.1kHz audio format (traditional CD standard) in terms of audio decoding.
type-c digital headphones are built with a decoding ear amplifier chip, just like there is a small sound card inside, which first converts the received digital signal into an analog signal, and then drives the earphone unit to sound.
type-c simply changes the form of the interface, itself is the received analog signal, and directly drives the earphone to sound, and the structure and principle are simpler.