This is the BOYC (www.buildyourownclone.com) version of a DS-1 distortion with a few mods.
It's been suggested that R8 (4.7K) can be replaced with a 1K resistor for more gain.
Here's another Jack Orman/Aron Nelson collaboration. It has gone though several revisions and this version sounds great! It's a distortion that sounds kinda nasty/fuzzy in a good way and when you crank the tone pot it gets very troaty, almost octave-fuzz like.
Here's a great CMOS-based distortion from Runoffgroove. It's actually two distortion in one.
One channel called "bounce" (lead) and one called "jiggle" (rythm). They have individual controls and either can be selected with a 3pdt switch. I got oscillation on the bounce channel, but putting a buffer in front solved that.
"We wanted one channel to sound very amp-like in the classic style. The sound of overdriven Fenders, Marshalls, etc. were a target sound. For the other channel, we wanted something a little more "over-the-top." We wanted a very high gain sound, with a smooth top. Something along the lines of the older Boogie amps."
"The Insanity Box" designed by Aron Nelson (the founder of diystompboxes.com) with mods from Jack Orman (www.muzique.com) is a great sounding fuzz/distortion! It reminds me of a Big Muff, but alittle more articulate/clearer. It has a massive amount of gain (depending on how you set the trimpots).
Here's a layout for a modded version of the Craig Anderton Tube Sound Fuzz. A great distortion that has inspired many others such as the Red Llama from Way Huge (one of my favourites). My brother gave me the classic book "electronic projects for musicians" by Craig Anderton and the schematic was there so I could not resist doing a layout for it.
At first I drew up a layout 1/1 with the original schematic with a "turbo" switch. It basically bypasses the fuzz pot and increases the gain (alot!). But the turbo mode cause oscillation so I decided to remove the switch and play around with the gain alittle and this is the modded version I ended up with. Craig Anderton later did a buffered version of this circuit, probably to tame the oscillation.
Hjärt Muller is a bass overdrive from Moody Sounds. It's basically a modded tube screamer adapted for use with bass and it sounds pretty good. Moody Sounds made great DIY kits, so check them out. :)
All the layouts are Verified unless noted.