Xpantastic!

Hi folks,

I recently bought a stereo volume pedal with a stereo 1/4" jack on it, 
and it's not working with the Crumar Toccata I have.

But will it work in Pedal Input 1 & 2 in my Xpander? I'm confused. How 
can a MIDI controller be a 1/4" jack, and how the heck can it be in stereo?

Also, are the pedals unique to Roland, Korg, etc, or is it the same 
standard?

I've tried looking online but no dice.

Thanks for any advice,

Jeremy.