Probably launching jizzband here but after searching i couldn't find anything relating to this
In 2002 Afx commissioned Dave Noyze to build him a dsp box.
From info from a friend of Dave's i learned that this was used for some of the piano tracks on Druqks and possibly more?
Dave Noyze akes loads of well interesting stuff and his music has some very nice bits to it too
anyway i thought it might be an interesting read or some of you :)
http://noyzelab.blogspot.co.uk/2013/04/afx-dsp-box-commission-2002.html