Do you know about the DOD 555-A Performer Distortion?  Its a classic distortion effect that DOD made in the early 80s and man was it a weirdo.  It ran off of TWO 18V power supplies and (surprisingly for a DOD product) didnt blow ass. It actually sounded quite nice in a vintage RAT kinda way.  Good for overdrive, and great for full-up grinder distortion.

Well I had one but the case had just gone to complete shit.  The flimsy DOD switch was busted, the battery door was gone, the knobs were all broken, and the pots were going too.  Solution?  Re-house it in a sturdy enclosure with a rugged-ass switch, new pots and new knobs.  Even better solution?  Make the enclosure gigantic!!!  I also added a small charge-pump board to provide 18V supply off a standard 9V power supply, so no dealing with 2 batteries.  Proceed, shredders.