Grounded vs. ungrounded power cord

I recently purchased an Integra DTC 9.8 processor, and when hooking it up, was surprised to find that it had an ungrounded ac inlet! All of my other equipment uses grounded power cords, and over the years I have acquired a number of mid to high end pc's. This may seem like a silly ?, but can I use one of my nicer grounded cords, instead of the cheap ungrounded cable that Integra supplies? Thanks for the help!