TRS Plug

TRS refers to the 3-terminal 'Tip, Ring and Sleeve' format of various types of jack plug, typically used either for stereo unbalanced connections (such as on headphones) or mono balanced connections (such as for line-level signals). A 2-terminal alternative is also available, referred to as the TS (Tip, Sleeve) version, used for mono unbalanced signals. The term is applicable to A-type, mini-jack, B-type, and Bantam connectors.