Big Muff Pi (Op Amp Version) |
Chris Gregory <stobiepole@gmail.com> suggested this one. He also verified it and helped improve the layout. His build is pictured. Paul Nelson authored the source schematic: topopiccione.atspace.com.
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culturejam said:
I just built this tonight. I really dig the sound. But I accidentally swapped the volume and sustain pots, so it’s quiet with some insane wooly fuzz when dimed. I love happy mistakes.
Thanks for making such great layouts!
Posted 02.09.2008 at 6:39 pm
dooby doo said:
hi any chance of anyone building a distortion along the lines of an mxr dd11 dimebag style pedal…for massive gain and crunch…
it would be a brilliant project…
Posted 22.02.2009 at 8:25 pm
edvard said:
Holy smokes, that’s tiny!!
I fixed a friend’s op-amp BMP years ago and the circuit took up the entire case. Those things were like 6″ x 7″ or so…
Nice work!
Posted 16.07.2009 at 4:58 pm
prima said:
What a great circuit, this is real man…awesome. Thanks
Posted 23.12.2009 at 2:11 am
Tony said:
Had a bit of trouble finding the out as it isn’t marked or noted in the schematic or pdf. I went to the original site (Paul Nelson) and he had it marked hehehe
Thanks for the layout!
Posted 15.01.2010 at 4:13 am
Nick Dunkerley said:
My first build for 15 years! Bar a couple of sloppy wiring errors,worked straight off.Sounds monstrous!! Also,cost very little ,used recycled box,switch,jacks,pots! I am a happy man!! Thanks millions,I WILL be building more!
Posted 25.03.2010 at 6:45 pm
David said:
I made it, few months ago! an awesome pedal closer to the SP sound on Siames Dream!!!
Posted 20.04.2010 at 3:04 pm
Conner said:
are the pots lin, log or audio?
Posted 14.06.2010 at 10:58 am
Old Fat Bubba said:
The sustain and volume pots are log while the tone is linear, I believe.
Posted 26.06.2010 at 7:13 am
Mike said:
Does anyone know if there is a way to buy PCBs so I don’t have to etch my own? Thanks.
Posted 30.06.2010 at 6:29 pm
JoeSixString said:
On this site, see Using a Fab House.
Posted 01.07.2010 at 12:28 am
Mike said:
Thanks, Joe. I also found this site which is selling them completely fabbed:
http://www.guitarpcb.com/apps/webstore/products/show/1260438
Posted 01.07.2010 at 7:47 pm
Metalbox said:
Need some mods for use with bass?
metalboxchile@gmail.com
Posted 16.08.2010 at 12:57 pm