right-angle 12v. (wall wart) plug?

Where can I get a right-angle replacement for the plug on my 12v. adapter*? Such a thing must exist, but my google-foo is inadequate.

  • Yamaha PA-3B

Like this?:

Try this one: http://cgi.ebay.com/YAMAHA-PA-3-10V-Power-Supply-PA-3-PA3B-PA3C-PA4-PA-40_W0QQitemZ200269361094QQihZ010QQcategoryZ29552QQcmdZViewItemQQ_trksidZp1742.m153.l1262