Tools, Tones and Toys for Guitarists
Here’s a pretty interesting lower gain overdrive. There’s a an opamp gain stage with soft clipping going into a JFET stage that pushes a modified BMP tone stack, followed by a BJT output buffer. One of the diodes in the opamp stage is unknown, so socket and experiment. I also took a few liberties from … Read more
“Taxi Drive is the Brunetti booster/overdrive. It is endowed with “FET-DIODE” hybrid technology, class A gain structure, to shape the sound in an original and innovative way. These features make Taxi Drive very versatile: you can use it as a simple booster or to obtain a very warm and winding crunch sound, moving easily from … Read more
Here is a layout for the Brunetti Mercury (should fit in a 1590B size box). Frank_NH has uploaded another verified, slightly modded version in the Forum section a while back. This is the best video I could find (in Thai language): Start biasing JFETs at 9V.