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1. #TUBE WORKS REAL TUBE OVERDRIVE VS BK BUTLER TUBE DRIVER MOD#
2. #TUBE WORKS REAL TUBE OVERDRIVE VS BK BUTLER TUBE DRIVER UPDATE#

Maxon used the same pcbs in a variety of different enclosures, marketed as the Maxon OD-801, Maxon MD-9, Maxon Jet Driver JD-01, Maxon Magnum Distortion MD-9, Ibanez Double Sound (second version), Ibanez Overdrive OD-9. Minor changes were made to the circuit for the next several years.

#TUBE WORKS REAL TUBE OVERDRIVE VS BK BUTLER TUBE DRIVER MOD#

This one is an exact clone of a 1973 "violet" era Ram's Head Big Muff variant, with the exception of one slight pathway mod in the tone section. Looking at just the BMP section of this circuit you will find it is different from the '74 circuit. This is a trace of my square button version, circa 1979-80, with the FET bypass switching section removed.

#TUBE WORKS REAL TUBE OVERDRIVE VS BK BUTLER TUBE DRIVER UPDATE#

MAXON D&S / IBANEZ OVERDRIVE Second Series, modified Violet Ram's Head Big Muff - An update to Maxon's mid 1970's OD-801 Big Muff clone (shown on page 1), also sold in an Ibanez branded version, the OD-850. I have also tried to keep the part numbers consistent from schematic to schematic. To keep it from being confusing for those reading their PCB's, since this is primarily a reference for vintage Big Muff owners, and to keep the EH tradition, we have used this order on all Big Muff schematics, including post 1980's Big Muffs and clones. This is due to the fact that they are printed in this order on the actial V1, V2, and V3 Big Muff PCB's. WHY ARE THE TRANSISTORS LABELED IN THE REVERSE ORDER? - Note that Q1-Q4 and D1-D4 are labeled in reverse order from input to output on these schematics than they are on a typical schematic. Evolution of the Big Muff Pi Circuit - Part 3 - 1980 to 2005