jumper for Aragon 8008 b

does anyone have any idea how I can make or buy a U shaped jumper for an Aragon 8008 b amp? I am missing one of them.
Are you talking about the jumper for shorting the balanced input? If so, just buy a piece of solid copper wire, strip the insulation, bend it with a pair of pliers, and VIOLA!
Probably too late but I would get a XLR connector and solder the jumper onto that and plug in the connector to the amp. That way you don't have to worry too about using the incorrect wire size or damaging the amp connector accidentally with a burr on the wire etc ...