The Big Muff Pi Tone Stack is a versatile circuit that can be added to any circuit to achieve the iconic Big Muff Pi tone. It can be used passively, but this may result in a loss of signal level. To counteract this, a recovery gain stage has been added to bring the level back up. The level of this stage can be adjusted using a trimmer.Additionally, the circuit includes a mids control, which can be set and left as is, or wired as an external pot for more control. This allows you to choose between two AMZ presence control circuits.Overall, the Big Muff Pi Tone Stack is a flexible and customizable addition to any circuit, allowing you to incorporate the beloved Big Muff Pi tone into your favorite setups.

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