In particular there is a wide variety of required gain/impedance as well as multiple different proprietary options as people attempted to adopt it to add microphones, controls/signals, and/or video. This is why Android, Apple, Microsoft and Playstation all have incompatible accessories.
The number of contacts can vary between 2 and 5. The length of the primary contact is not consistent, thus the mechanism to retain the plug often does not engage. Likewise, there is no specification on overall plug size to guarantee a jack will fit into the device case.
Thats excluding other extensions such as toslink. It is also worth noting that making the wrong connection, e.g. attaching an AV output to an audio input, can physically damage equipment.
Generally what people see is that the headset they got for whatever device works and assume there is broad compatibility - but to work best the jack on the headset is being designed for and tested against a particular subset of supported phones/controllers/music players. And broader support is typically not possible without separate connectors (e.g. a headset cord sold for apple, for xbox, for playstation, for android).
In particular there is a wide variety of required gain/impedance as well as multiple different proprietary options as people attempted to adopt it to add microphones, controls/signals, and/or video. This is why Android, Apple, Microsoft and Playstation all have incompatible accessories.
The number of contacts can vary between 2 and 5. The length of the primary contact is not consistent, thus the mechanism to retain the plug often does not engage. Likewise, there is no specification on overall plug size to guarantee a jack will fit into the device case.
Thats excluding other extensions such as toslink. It is also worth noting that making the wrong connection, e.g. attaching an AV output to an audio input, can physically damage equipment.
Generally what people see is that the headset they got for whatever device works and assume there is broad compatibility - but to work best the jack on the headset is being designed for and tested against a particular subset of supported phones/controllers/music players. And broader support is typically not possible without separate connectors (e.g. a headset cord sold for apple, for xbox, for playstation, for android).