The Bothe Bondi Effects Sick As Overdrive, is a highly regarded guitar effects pedal heavily inspired by the legendary Klon Centaur circuit.>

Internal Power: The pedal runs internally at 18 Volts via a split-rail voltage doubler. Do not plug an 18V adapter into it; power it exclusively using a standard 9V DC center-negative adapter. The internal boost yields massive headroom and note clarity. [1, 2, 3, 4]

• The Unique Gain Knob: The GAIN knob does not just add distortion—it blends your clean signal and overdrive. Fully counter-clockwise is a pristine clean boost. As you turn it up, it increases the gain ratio while naturally rolling off the clean signal to keep your tone articulate and clear. [1, 3, 4, 5]

Interface Control Functions

• Level: Adjusts the overall output volume of the pedal. [1]
• Bass & Treble: A powerful active EQ tonestack providing up to 15dB of independent boost or cut. Setting them at the 12 o'clock position leaves the EQ flat. [, 2]
• Gain: Simultaneously controls the overdrive intensity and clean blend ratio. [1, 2]
• Toggle Switch: Changes the clipping diodes and headroom character:
• • Up (High Gain Mode): Introduces asymmetric clipping with more compression, a distinct mid-range hump, and higher perceived distortion.
  • Down (Low Gain Mode): Provides an open, highly transparent, and dynamic voicing with high headroom that behaves like natural tube amp breakup. [, 2, 3]