Baja MDR Overdrive

Bajaman's overdrive/distortion circuit based on the Mesa Dual Rectifier high gain channel with switchable tone stack.
Original thread and schematic available on the FSB forum here.
The layout should fit in a 1590B box.

Mesa/Boogie Throttle Box

Another circuit by Mesa Boogie.
This one uses an Inductor, a dual LED and a different Bypass Switch wiring.
There's already an unverified layout (multiple boards) by Savvas in the Contributions section of the forum but I wanted to add one on a single board.
You can find the original thread and schematic here.

Mesa/Boogie Flux-Drive

A slightly modified version of Xotic BB Preamp from Mesa Boogie.
You can find original thread and schematic here.