Big Muff PI NYC Modded with:

4 transistor switches (lowest ones on the pedal) - from the left - 2N222, MPSA18, MPSA18, BC108. If the switch is down it means it uses the original NYC transistor. You can switch them to get more variations of the sound. Some of the transistors are more quit so in that situation just add more volume.

2 diode switches - below the word BIG - D1, D2 and D3, D4 switch is below the word MUFF. Switch with original 1N4148 and two red LEDs. If switch is in the middle it will turn off the diodes. If switch is down it means it uses the original 1N4148 diodes, up - two red LEDs.

Mid pot with custom bloody knob adds more mids to the drive, opens up the sound, but it depends on the transistor, diode and Tone pot configuration.

Tone capacitor switch near the Tone pot. If the switch is in the middle it switches back to the original sound.

I got this pedal used so it has scratches, but it doesnt affect the sound. Comes with no adapter and no original box.