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Tech Tip Of The Day: Jargon Confusion
Getting tripped up between the abbreviations for TS, TRS, and 1/4" is a common mistake so here's our explanation.
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Provided by Sweetwater.

 
Q: I’ve been helping out with sound at church for a while now, so I feel kind of silly asking this question.

However, I see the abbreviations “TS” and “TRS” on lots of things with 1/4” jacks and plugs.

What do all these different abbreviations mean?

A: Not a silly question at all! Deciphering all the jargon and abbreviations associated with pro audio can indeed be a challenging task.

“TS” stands for “tip-sleeve,” a type of 1/4” phone connector with two sections: the tip (usually carrying the positive signal) and the sleeve (usually connected to ground or shield).

The TS type of connector is used for most instrument connections (guitar, keyboard, bass, etc.) and for single-channel (monophonic) audio signals. It is also referred to as “unbalanced,” since there is no separate conductor carrying the negative polarity signal.

“TRS” stands for “tip-ring-sleeve,” a type of 1/4” connector with three sections: the tip (usually positive), a separate “ring” section (usually carrying the negative polarity signal), and the sleeve (usually connected to ground).

You may also see the TRS type of connector referred to as “balanced,” since the positive, negative, and ground signals are carried separately and can be combined for common mode rejection.

However, TRS connectors can also be used to carry two separate unbalanced signals — a great example is a headphone connector. In this case, the tip carries the positive signal for one audio channel (either right or left) and the ring carries the other channel’s positive signal; the sleeve serves as ground for both channels.

TRS connectors are also sometimes used to carry two completely different signals, as is common with “insert” jacks. These connections use the tip to carry the positive unbalanced signal for input or output, while the ring carries the positive signal for the complementary unbalanced input or output signal. Once again, the sleeve carries ground for both signals.

 
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Source: Sweetwater

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