The DOD FX10 Bi-FET Preamp is a popular pedal from DOD known for its unique designs. However, it has some drawbacks such as a poor switching system, outdated PCBs, and non-standard power supply.

The FX10 is an op-amp based boost pedal with a large volume boost and an active tone control. The tone control can boost either the treble or bass frequencies. This PCB is a recreation of the original circuit with improvements such as true bypass switching, a pulldown resistor at the input, and better power supply filtering.

Summary created by AI from the original source.