Based on Friedman’s Dirty Shirley
The Dirty Freeman overdrive pedal crams all the British-style grit, supple touch sensitivity, and tonal flexibility of its namesake all-tube amplifier head into a pedalboard-friendly enclosure. It includes a tight switch to reign in your amp’s low end when being pushed.
- This board has been designed for on-board pots and switches and keeps your project tidy without long cables around.
- Works using four TL072.
- Internal Trimpot to set the max amount of gain at taste.
- Fits on a 125B enclosure with top-mounted jacks.
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum