Nomenclature
Tip = (T)
Ring = (R)
Sleeve = (S)
2 Conductor, 2 pole, TS
3 Conductor, 3 pole, TRS
4 Conductor, 4 pole, TRRS
5 Conductor, 5 pole, TRRRS
TS (Only tip and sleeve connectors are available)
PIN 1 = Ground
PIN 2 = Signal
Mainly Guitars, Instruments, and applications that do require a long cable
TRS (Tip, Sleeve and additional ring connector with two insulating bands)
Unbalance Mono Balanced Mono Unbalanced Stereo
PIN 1 = Ground Ground Ground
PIN 2 = Optional (e.g Mic) Signal (cold) Right Audio Chan
PIN 3 = Signal Signal (Hot) Left Audio Chan
Most Common form of Jack Connector, Found on most stock headphone cables
TRRS 4 conductor plug, two additional rings with 3 insulating bands
PIN 1 = Microphone
PIN 2 = Ground
PIN 3 = Right Audio Channel
PIN 4 = Left Audio Channel
The format is also called Celluar Telecommunications And Internet Association (CTIA) Standard. Most commonly adopted stand for Modern Smart-phones and gamming consoles where cable supports Mic and Stereo Audio at the same Time
