Mr. George Mundy Installed a version of his Pluto Filters into MY old Bass;
http://club.alembic.com/Images/411/2792.html?1262960781 At that time I had the opportunity to try out a Pluto Pedal during a visit with Mr. Mundy.
The pedal was designed to work in two directions. I had fun playing with it. It is a variation of a STATE VARIABLE FILTER.
He did this at about the time that Mr. Phil Lesh was getting his Osage Alembic wired with a more substantial electronics package.I remember seeing Phil's Bass on the work bench in progress.
In my opinion the Alembic SF-2 is the most useful and musical variation of a STATE VARIABLE FLTER to date.
A handy little device______I love mine .