"Iain Churches" wrote

I wonder why you call them "domestic", when stereo
or balanced line on jack is rarely found on domestic
equipment - headphone outputs being the exception.

3-pole A gauge jacks are frequently used on "semi-pro" kit, such as PA
systems, cheapo mixers etc. as well as headphone sockets on domestic HiFi
amplifiers.

In music we use the term "balanced jack" (add plug, if you like:-)
when it is obvious you don't mean a patchbay (GPO) type.

That's utterly meaningless. Patchbays are almost always balanced, so how can
you use the term "balanced jack" to distinguish it from a "patchbay" type?
And how is it supposed to be "obvious" what you mean?

The refusal of the broadcast and recording industries to use agreed,
unambiguous terms for the various types of 1/4" jack is one of the mysteries
of modern life. Whilst the terms Dave uses are vague, yours are worse.

David.