XLR volume pedal?

[Tim Nelson <tcn62@ici.net>]

Do any of you loopsters know of anybody who manufactures a low-impedance
volume pedal with XLR connectors?

My rig includes a mic for looping odd occasional acoustic stuff (flutes,
etc) along with the usual electrical suspects. I usually have the fader on
the mic channel down and bring it up when I need it, but it would be so
much smoother to be able to do this by foot since a free hand is sometimes
hard to come by.

Tim