Electro-Harmonix · Fuzz

Bass Big Muff Pi

9V · 7 mA · maker

Electro-Harmonix Bass Big Muff Pi power requirements

9V DC · centre negative · draws 7mA
the voltage it ships for · also runs on a 9V battery · from the maker
“Power Supply 9V battery included (optional 9.6VDC-200mA power adapter not included) … Current Draw 7mA” source
Checked 2026-10-13
9.6V DC · centre negative · draws 7mA
from the maker
“Power Supply 9V battery included (optional 9.6VDC-200mA power adapter not included) … Current Draw 7mA” source
Checked 2026-10-13

101.6 × 120.65 × 57.15 mm (4.00 × 4.75 × 2.25 in)

Width × depth × height, from the manufacturer.

Each has an output that can power it, checked against its published figure. Plan the whole board to see what runs everything.