El Boludo (Overdrive/Fuzz) (Perhaps from 2012?)

Effect Information

Information from the builder’s website [not used w/permission and not edited]

El Musico Loco El Boludo Boost/Overdrive

El Boludo is Argentinian street slang meaning ‘idiot’ or ‘stupid’
but the literal translation means ‘someone with big balls’ and my friend
Scruffie who has some big balls, lovingly designed this circuit while
on a psychedelic gambling binge in Vegas a la Hunter S. Thompson.

El Boludo is a chunky massive semi-clean boost to fat overdrive
pedal. A new mix of the old going on in there as it is a 5534 op amp
for a thick, full signal driving a hand selected NOS NPN transistor to
give us a good bit of age old techno-fuzziness. Nothing genius and
probably nothing new and so obvious I have not seen it done before but
someone out there will prove me wrong I am sure.

It was originally meant to be a fuzz type pedal but works better in
the clean boost to overdrive range so I have removed the diode clipping
stage for all future models of the pedal.

Caña means to brag or boast and it drives the gain stage of the op
amp so consider it your pre-gain. It is interactive with the setting of
the following gain stage and works to control the amount of drive you
have coming from any previous pedal.

Huevos is the gain stage and needs no defining. This drives the front end of the transistor for all your distorto-fun.

We keep it all sparkly and well behaved by buffering the output so the Boludo plays fair with the rest of your set-up.

Last but not least is your Jefe, your Boss, your Master Master Master of Volume- You get the idea…

So that’s it all wrapped up in a shiny etched box with true bypass,
grounded input switching and the best parts I can get my hands on at the

El Musico Loco El Boludo Boost/Overdrive Features:

  • Boost to Overdrive Range
  • Massive semi-clean boost to fat overdrive pedal
  • Full signal driving
  • Hand selected NOS NPN

More information here:

Video Demo

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