power cord upgrade


I recently bought vintage accuphase preamp. It has detachable power cord but it is not 3 prong but only has 2 prongs. I have only seen 3 prong power cables. Does anyone know of an adapter so I can use my 3 prong power cables.
Convert?fit=crop&h=128&policy=eyjlehbpcnkioje0otywmdewntysimnhbgwiolsicmvhzcisimnvbnzlcnqixx0%3d&rotate=exif&signature=a57eae1f0c9701b6a21511bcd87beb6043fcfcbc1fd002353757e5eb1c959e00&w=128lesterp4
PS Audio and Cardas both make PC with the 2 prong C-7 connector... Check AA or Music direct.
X-Port By Audioparts IEC/AC ADAPTER
Follow this link this is what yopu are looking for.

http://cls.audiogon.com/cgi-bin/cls.pl?cablpowr&1122031813