In article ,
Iain Churches wrote:
Most devices that suply phantom power, do so to
XLR sockets only. But there are exceptions. I have
a Ducane supply where the DC appears on the
TRS connectors also.

So it is good practice *always* to ensure the phantom
is switched off before inserting or removing any connector.
That way you won't get caught out.

I've seen plenty of installations where the console supplies the phantom
powering so that goes via the jackfield.

The best method IMHO in a studio is to apply the phantom direct to the XLR
input on the wall box - with no means of switching it off. Never had
problems with any pro mics of all types doing this. It is after all what
it was designed to do - be transparent to a non powered mic.

--
*Everyone has a photographic memory. Some just don't have film*

Dave Plowman London SW
To e-mail, change noise into sound.