The Design‑A‑Drive is the first pedal that allows you to really substantially tune its overdrive characteristics to match the requirements of a large range of amps.
A replica of King Tubby’s Altec 9069B passive filter
The King Tubby Big Knob (KTBK) filter has been built as a precise replica of the Altec, with adaptations made for modern production such as impedance matching, mode selector and resonance control.