This is very similar to the original JamMan ROM except that several new controls have been added. $75 U.S. Refer to the JamMan Enhancment ROM Homepage for additional info and easy online ordering.
We've created quite a few ROMs over the years for JamMan including test/beta versions which are still being used by people so we're publishing the docs here.
Background image by Pauline Moss. at http://paulinemoss.deviantart.com/art/Stars-307119758