Rega P25 Speed Controller

For no good reason whatsoever I want to add a speed controller to my trusty Rega P25. Apparently the Heed Orbit is one option. Are there any others? I've been lead to believe that the standard Rega PSU Power Supply will not work. Any thoughts? Suggestions? Thanks!
The Heed and Rega are close cousins. If you want to go fancier, you can spend more than your table's worth on a VPI or Walker.

dealer disclosure.
Project Speedbox SE2 ($550) should work with the P25. I know the older Speedbox SE worked because I use it on one of my Rega's.