EHX Op-Amp Big Muff Pi gives you the sound of the late-1970's Op Amp Big Muff. The sound of this version is familiar from Smashing Pumpkins' recordings and many others. Op-Amp Big Muff uses op-amps instead of transistors to achieve its distinctive sound.
Volume: Sets output volume level.
Tone: Adjusts the tone. Towards 7 o'clock you will get most bass, gets brighter towards 5 o'clock.
Tone On/Off Switch: Turns the Tone control on or off.
Sustain: Adjusts the amount of gain and sustain. More of both towards 5 o'clock.
- Power Requirements: 2.1 mm 9V DC centre negative power supply or 9V battery. 25 mA.
- True Bypass
- Made in USA