pj-378 is a common type of headphone socket. Its product features mainly include the following aspects: 1. High-quality audio transmission: The pj-378 uses a metal case and high-quality internal contacts to provide stable audio transmission and low distortion sound quality experience. 2. Strong durability: the shell of pj-378 is made of strong metal material, which can withstand long-term use and plugging without loosening or damage. 3. Easy to operate: pj-378 plug design is reasonable, easy to insert, easy to use. The location and size of the socket are also compatible with most headphones on the market. 4. Downward compatibility: The pj-378 also supports older headphone specifications, such as 3.5mm, 2.5mm, etc., so it can be compatible with a wide range of headphone types and brands, which is very practical. 5. Wide application scenarios: pj-378 is widely used in various audio devices, such as mobile phones, computers, MP3s, audio equipment, etc., due to its high-quality audio transmission capability, strong material and easy operation. Overall, the pj-378 is a stable, high quality and practical headphone socket that is ideal for audio interfaces.Video and audio products, notebook, tablet, communication products, household appliances Mobile phone stereo design, earphone,CD player, wireless phone, MP3 player, DVD, digital products The pj-378 is widely used in various audio devices such as mobile phones, computers, MP3 players and audio equipment due to its high quality audio transmission capability, strong material and easy operation. pj-378 is widely used in a variety of audio equipment products, it can help users to achieve higher quality, more stable and more diversified audio input and output functions, improve the audio effect and viewing, entertainment experience. Powerful, solid and durable audio equipment with a simple, easy-to-use design. Whether you are a music lover or a personal or business user who needs headphones, you can get excellent sound quality and use experience.