Audio Jack Connectors
The audio jack is an industry standard connector that has many potential uses beyond providing a basic audio connection. 2.5 mm or 3.5 mm audio jacks are common in smartphones, media players, hi-fi devices and many other devices. It can be used not only for easy connection of external speakers or headphones, but also for smartphone selfie sticks equipped with a camera shutter release button.
1. Analog audio interface
TRS interface (large / small three-core), RCA Lotus head, XLR Canon port, etc.
2. Digital audio interface
AES / EBU interface, S / PDIF interface, coaxial interface, RCA coaxial interface and BNC coaxial interface, optical interface.