Hi all

I have been given a cheap secondhand amp which I'm playing with to see if it
works. I've managed to figure out most connections, but the only ones I'm
not sure about are the power connections.

There is one terminal marked 'GND' (which I'm guessing is the earth), one
marked '+' (which I'm fairly sure is the positive feed), but the one that is
puzzling me is marked 'REM'. My best guess is that it's for a remote on/off
switch. Do I need to use it? and if not, do I need to bridge it to one of
the other contacts?

TIA,
Marcus