Might you have an extra component or two not in use? If they have detachable cords that are the same design as the socket on the back of your 7500(quite common) that would do you just fine. Inspect the socket, it should have 3 prongs set in a triangle. The cord would have the same design to work.

You might even be able to buy one cheaply from a big box in the computer section, if you can't wait!

Edit: I take it back! Just looked at a pic of the 7500 and the socket looks unique to Outlaw. My Oppo, Parasound, Emotiva cords are all the same, but that Outlaw appears different.