Digital Delay Fuzz-O Leveler Volume Phaser Screamer
Pfeiffer Electronic Guitar Effect Pedals
"Got the phaser today...sounds great! i've finally ended my phaser search. thanks for the killer deal." - Jeff / Portland, OR........  "Played it and tested it and it sounds great!  Also the finish looks awesome, but very hard to capture the awesomeness on photo!  Thanks for a great pedal!" - Kristof / Belgium........  "I love your phaser man the pedal is great!" - Cory / Garwood, NJ........  "Your FUZZ-O and OTHER PEDALS are KILLER!!!!!!!!!!!!!! Thanks sooo much!" - Jeffery and Ready Set Go / Toluca Lake, CA........ "[LEVELER] It's fricking GREAT!!! Works as advertised and not only solves the problem, but does it extremely effectively.  An instant keeper!  For the rest of you, it's simply a must have. I hope Duane sells thousands of these. He deserves the biz for coming up with this." - Jon / Northern CA........ 

Pfeiffer Fuzz-O Guitar Pedal


This is an Octavia Fuzz guitar effect pedal based on the Tycobrahe Octavia circuit. Originally designed by Roger Mayer and possibly copied by the Tycobrahe Sound Company. Rumor has it that Jimi Hendrix brought his Roger Mayer Octavio in for repair to Tycobrahe and that’s when they supposedly cloned it.

This guitar effect pedal uses a small audio transformer to create the octave-up sound. Two germanium diodes and three high-gain silicon transistors create a screaming, yet surprisingly controllable fuzz effect.


  • Level controls the overall volume.  Because of the high gain transistors used, the fuzz-o can get very loud.  Use this knob to set a desirable output level.

  • Gain controls the amount of overdrive/distortion.  At low gain setting, the octave effect is more pronounced.

  • ByPass engages the pedal on/off.

  • Octifier engages the octave effect on/off.  When turned off, the Fuzz-O is just a normal fuzz effect.


This pedal has true bypass using a 3PDT heavy duty stomp switch. Powered by a -9VDC, negative post adaptor (not included), or battery.  Includes reverse polarity protection circuitry.

All Pfeiffer pedals are hand-wired and finished with attractive laser printed lettering sealed in a polymer coating.

Two year warranty.

Dimensions: 125B enclosure (4.7" x 2.5" x 1.5")