Quarter Inch (1/4") Adapters
The 1⁄4 (1/4) inch (6.35mm) TRS connector (tip, ring, sleeve) is common connector typically used for analog signals including audio.
Tip (3): Left for stereo, positive for balanced mono.
Ring (2): Right for stereo, negative for balanced mono,
Sleeve (1): Ground
(4) Insulation rings.
Other TRS connectors are the miniature 3.5mm (~1⁄8 or 1/8 inch), and the sub-miniature 2.5mm (~3/32 inch).

