EarthQuaker Sunn O))) HalfLifeOctave Distortion + Booster Effect Pedal

Octave (O): This blends in the analog octave as you turn it clockwise.

Filter (F): This is a low pass filter with a frequency response from around 500 Hz to 30 kHz. Turn counterclockwise for more high-end, clockwise for less.

Distortion (D): Turn clockwise for more distortion, counterclockwise for less. This provides about +60dB of gain.

Magnitude (MAG): This is the output volume for the booster. Clockwise to blow up your amp, counterclockwise if you're a baby. Unity is somewhere right around noon on the dial.

Clipping Switch (CLIP):

• OpAmp: No diodes to allow for full, grinding Op Amp assault at maximum volume.

• Asymm: Utilizes two silicon diodes and one LED in an asymmetrical clipping configuration. This delivers a slightly compressed and smooth crunch, similar to a valve amplifier.

• Symm: This is the stock double silicon diode configuration, which provides that classic tone you know and love.

Amplitude (AMP): Output volume for the octave distortion side. Clockwise for more hearing loss, counterclockwise for a healthy life in old age.

Magnitude Footswitch: Boost Activator

Amplitude Footswitch: Octave Distortion Activator

Octave EXP Jack: Connect any expression pedal to this input to control the analog octave blend.