Side-by-Side Comparison
Jack Connectors
2.5mm TRRS vs. 6.35 mm (1/4") TRS
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
2.5mm TRRS
6.35 mm (1/4") TRS
2.5mm TRRS adds a microphone conductor to the 2.5mm TRS jack, following the same CTIA or OMTP wiring conventions as 3.5mm TRRS. It served as a mobile phone headset jack -- including on older Nokia handsets -- before 3.5mm became the universal smartphone headset size.
6.35mm TRS is the 3-conductor version of the quarter-inch phone connector, wired for either balanced mono line/microphone signals in professional audio gear or stereo signals in full-size headphones -- the same wiring logic as 3.5mm TRS at four times the shaft diameter.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Connector Family
|
Phone Jack (Micro-Mini) | Phone Jack (Quarter-Inch / Standard Phone) |
|
Shaft / Plug Diameter
|
2.5 mm | 6.35 mm (1/4") |
|
Conductors / Contacts
|
4 (Tip, Ring 1, Ring 2, Sleeve) | 3 (Tip, Ring, Sleeve) |
|
Signal Format
|
Stereo Audio + Microphone / Video | Balanced Mono / Unbalanced Stereo |
|
Primary Applications
|
Pre-smartphone Nokia/mobile headsets, portable AV camcorder break-out | Studio reference headphones, audio interface line in/out, balanced mixer interconnects |
|
CTIA Standard Pinout
|
Tip: Left | Ring 1: Right | Ring 2: Ground | Sleeve: Mic | — |
|
OMTP Standard Pinout
|
Tip: Left | Ring 1: Right | Ring 2: Mic | Sleeve: Ground | — |
|
Standard Stereo Pinout
|
— | Tip: Left | Ring: Right | Sleeve: Ground |
|
Balanced Mono Pinout
|
— | Tip: Hot (+) | Ring: Cold (-) | Sleeve: Ground |
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