"Saturday!  Saturday!  Saturday!  Saturday!  Saturday!  Saturday!  Saturday!  Saturday!  Saturday night's alright!"



The AstroFuzz fuzz rack effect module compares to the AstroTone Fuzz, Analogman AstroTone, and Sam Ash Fuzzz Boxx of the 60's.  Nice, tight, articulate, overdrive/fuzz that sounds like the killer opening riff in Elton John's Saturday Night's Alright.



Our AstroFuzz module compares to the late 60's AstroTone Fuzz, which was also sold as the Sam Ash Fuzzz Boxx.  Analogman now owns the brand name and makes a great AstroTone pedal.  The 60's saw the development of many fuzz effects, some famous, some less so.  Many were only in production for a short time, such as the Astrotone Fuzz and the Sam Ash Fuzzz Boxx.  A recent reissue of the Sam Ash Fuzzz Boxx seems as rare as the originals.  It was one of the first fuzz pedals to use silicon transistors.  It also sported a novel new control - the Tone control.  Of course the Tone control is now about as common as a volume control, but back in the late 60's they were still figuring things out.  Turns out they didn't really get this Tone control right.  It works, but doesn't do much.  (Of course we can correct that!)

While it is a 60's fuzz, it has a different vibe to it than what you might expect.  It is not that big, wooly, blanket-over-your-speaker type of fuzz.  This one is more open and less compressed, with better clarity and no flub.  Somewhat closer to a ripping overdrive than an all-out fuzz.  You won't be able to cover up sloppy playing with this fuzz!  It's great for some classic rock - perfect for Saturday Night's Alright, although maybe Davey Johnstone didn't use that exact effect (or maybe he did...).  Also good for Mr Soul by Buffalo Springfield.  Maybe even Cinnamon Girl.  And maybe some Boston...?

While it may not have been used for any of these recordings, it sounds similar.  It covers some territory between a nice, dry, crunchy overdrive and an articulate fuzz - a simple effect that can be addictive, and which begs to be turned up.  It cleans up pretty nicely with your guitar volume.  That Saturday Night's Alright opening riff is the sound of the 70's and gets better every time you hear it.  Whether or not this effect was used for that sound, play that riff (loudly!) and you'll have a good idea what this module sounds like.  It's great on its own, but with its clarity and range of gain, it should be a great stacking drive.  Whether you call it a fuzz or an overdrive, it provides a great rockin' tone, one of our faves.

As mentioned, the original Tone control has a limited range that isn't so great.  The Improved Tone Control option is nice and we recommend it for guitar.  It extends the high end range of control a bit by changing the corner from around 1882Hz to around 7200Hz.  At the low end, it is shifted just a smidge higher.  Instead of cornering down around 287Hz, it corners  around 324Hz, about the difference between a D and an E.  It still isn't maybe the best Tone control out there, but you probably don't really need it.  Set it to noon and carry on.  In addition to the Tone control, there are Attack and Volume controls.

Many like the way these sound with bass, too!  For bass, the original Tone control may still be the better option, as it is slightly more focused on the lows and lower harmonics.



  • AstroFuzz - compares to AstroTone Fuzz and Sam Ash Fuzzz Boxx







  • Improved Tone Control - Choose this to get a more functional Tone control.  The original range of control is all still there, plus some.  Still not the best Tone control available, but works fine for this circuit.  Better, but not "must have" for guitar.  For bass, the original Tone control may be the way to go, as it is more focused on the lows.
  • Boutique Version - Analogman released a tweaked version of the circuit, which includes the improved tone control.  Select this option for his tweaks.  The original trims off some of the bass, while these mods let much more bass come in.  Articulation is still good, but the sound is a bit darker.  Bass players may want this option.  For guitar, you may cut through better with the original specs.
  • Transistors - We use 2N3565 transistors, like the original circuit.  Ours are the "glob-top" type.  If you want to try something else, just let us know.  It actually doesn't matter that much, as long as we stay in the same gain range.  If you really hate noise, let us know and we can put in some newer transistors that produce a bit less noise.  The originals aren't really noisy, but if you want it cleaner, we can get it a smidge cleaner.


Front Panel

  • Volume
  • Tone
  • Attack


Rear Panel

  • Audio In
  • Audio Out
  • On/Off Footswitch
  • On/Off Override
  • DC Power
  • DC Power LED


Module Width

  • 1.5" standard
  • 2" left wing module and 1.5" right wing modules are available 


Power Consumption (aprox)



Base Configurations

Part # Description List Price
MOD-ASTROFUZZ AstroFuzz module $189



Part # Description List Price
MOPT-ASTROFUZZ-TONE Improved Tone Control $0
MOPT-ASTROFUZZ-TRANS Custom Transistors $0 - TBD



Part # Description List Price
MPT-ASTROFUZZ-CA Replacement pot, switch, jack, LED cable assembly $19
MPT-ASTROFUZZ-KNB Replacement control knob $2
MPT-ASTROFUZZ-PB Replacement power board $29
MPT-ASTROFUZZ-SB Replacement switching board $29