Side-by-Side Comparison
Jack Connectors
2.5mm TRRS vs. 3.5 mm TRS
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
2.5mm TRRS
3.5 mm 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.
3.5mm TRS is the 3-conductor version of the 3.5mm mini-jack. It's wired either as unbalanced stereo audio (tip: left, ring: right, sleeve: ground) in consumer headphones, or as balanced mono (tip: hot, ring: cold, sleeve: ground) in some professional audio gear -- the same three contacts, different signals depending on the device.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Connector Family
|
Phone Jack (Micro-Mini) | Phone Jack (Mini-Jack) |
|
Shaft / Plug Diameter
|
2.5 mm | 3.5 mm (1/8") |
|
Conductors / Contacts
|
4 (Tip, Ring 1, Ring 2, Sleeve) | 3 (Tip, Ring, Sleeve) |
|
Signal Format
|
Stereo Audio + Microphone / Video | Unbalanced Stereo / Balanced Mono |
|
Primary Applications
|
Pre-smartphone Nokia/mobile headsets, portable AV camcorder break-out | Standard headphones, PC audio line-out, auxiliary inputs, portable media players |
|
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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