In article ,
Iain Churches wrote:
It's quite simple. There are two types of TRS 6.3mm jacks.

They're both actually 1/4" if you want to be pedantic. They were designed
before metrication.

The one popularly known as the GPO type, with the small
tip, is used in music studios only on patch bays. Cables with
one of these at either end are referred to as patch cords.

In TV studios at one time they were used for a great deal more. Just about
anything that required a line, rather than mic level feed. Like high
impedance headphones. Telephones. Foldback speakers. Etc etc.
And nobody ever talks about 'patch cords' in broadcasting. Universally
known as double enders.

The other type, with the larger ball tip, is used everywhere
else (music amps, keyboards etc) It is referred to as a
balaced jack (add plug if you like:-) and usually has an
XLR on the other end of the cable.

--
*Those who live by the sword get shot by those who don't*

Dave Plowman London SW
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