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Audio Connectors

There are a variety of different audio connectors available. The most common types are 3-pin XLR, RCA, and 6.5mm TRS plugs (also known as ¼" jacks).


3-pin XLR

3-pin XLR connectors are mainly used for balanced audio signals. Using a balanced signal reduces the risk of inference.

There are a number of different XLR's: 3-pin, 4-pin, 5-pin, etc.

3-pin XLR Male

3-pin XLR Male3-pin XLR Male Components

3-pin XLR Female

3-pin XLR Female3-pin XLR Female Components

1/4" TRS Plug (6.5mm, AKA Phone Plug or Jack Plug)

There are two types of 6.5mm plugs: Mono and stereo. The mono plug has a tip and a sleeve, the stereo plug has ring, a tip and a sleeve.

Jacks also come in various sizes - 6.5mm (¼"), 3.5mm, 2.5mm. The wiring for all of them is the same.

1/4" Mono Phone Plug (TS, Tip-Sleeve)

Mono Phone PlugMono Phone Plug Components

1/4" Stereo Phone Plug (TRS, Tip-Ring-Sleeve)

Stereo Phone PlugStereo Phone Plug Components

RCA (AKA Phono)

RCAs are used a lot for home stereos, videos, DVDs etc.

The RCA can carry either audio or video. It is wired the same way as a mono jack: The center pin is the +ve, and the outer ring is the -ve or shield.

RCA Male

RCA MaleRCA Male Components

Audio Cables and Connections

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