
If you've been following the Gristleizer posts starting with
this clone up for auction, followed by
this video and finally
this post on the source of the design, pictured is the Gristleizer by
Chris Carter of
Throbbing Gristle. Title link takes you to more info and shots.
"My original Gristleizer units were based around the Roy Gwinn 'GEP' design published in Practical Electronic and sold in kit form (just the PCB & components) by Phonosonics in the UK in 1977. This
LINK takes you to the current location of the schematic (look under Effects\PE Stuff\Guitar Effect). I've really never made any secret of the origins of the Gristleizer and in fact some years ago I briefly had the Phonosonics schematic on my website for all to see. However, I added some mods of my own and designed a completely new case and made units for myself, the band (TG) and friends. Only probably about 10 units in total."
There is more info
here as well. Finally, be sure to check out the comments the previous posts linked above for more.