The following lines were added (+) and removed (-):
== Polarity ==[[Image:wiki-stereo-phono-jack.gif]]:1. Sleeve: usually ground:2. Ring: Right-hand channel for stereo signals, negative phase for balanced mono signals, power supply for power-requiring mono signal sources:3. Tip: Left-hand channel for stereo signals, positive phase for balanced mono signals, signal line for unbalanced mono signals:4. Insulating rings [[Category:Electronics]][[Category:Consumer Electronics]]