Electro-Harmonix Big Muff Pi Dimensions and Power Requirements
The Electro-Harmonix Big Muff Pi measures 5.5 × 6.88 in (140 × 175 mm) and stands 2.95 in (74.9 mm) tall. It needs 9 V DC at 3 mA, center-negative.
Electro-Harmonix Big Muff Pi specifications
- Width
- 5.5 in (140 mm)
- Depth
- 6.88 in (175 mm)
- Height
- 2.95 in (74.9 mm)
- Voltage
- 9 V DC
- Current draw
- 3 mA
- Plug polarity
- Center-negative
- Battery
- Takes a 9 V battery
- Jacks
- On the sides
Size and weight: 5.5 x 2.95 x 6.88 in. Power: The Big Muff Pi is powered from a 9V battery or you can use an optional 9VDC AC Adapter ... The Big Muff has a current draw of approximately 3mA at 9VDC. Checked 2026-11-05. The source does not say which side is width and which is depth, so we took them from the shape.
Power for the Electro-Harmonix Big Muff Pi
Any 9 V center-negative output covers it.
Will the Electro-Harmonix Big Muff Pi fit on your board
Width must fit inside the frame. Depth may hang over the front and back by up to 5 mm in total.
| Board | Frame | Fit | Room beside it | BOSS-size pedals beside it, patch cables | Planner |
|---|---|---|---|---|---|
| Pedaltrain Nano+ | 18 × 5 in457 × 127 mm | Too deep: 48 mm deeper than the board, past our 5 mm allowance | – | – | Try it |
| RockBoard DUO 2.1 | 18.5 × 5.59 in470 × 142 mm | Fits turned sideways | 295 mm | 3 | Try it |
| Pedaltrain Metro 16 | 16 × 8 in406 × 203 mm | Fits | 267 mm | 2 | Try it |
| Pedaltrain Metro 20 | 20 × 8 in508 × 203 mm | Fits | 368 mm | 3 | Try it |
| Pedaltrain Metro 24 | 24 × 8 in610 × 203 mm | Fits | 470 mm | 4 | Try it |
| Pedaltrain Classic JR | 18 × 12.5 in457 × 318 mm | Fits | 318 mm | 3 | Try it |
| Pedaltrain Classic 2 | 24 × 12.5 in610 × 318 mm | Fits | 470 mm | 4 | Try it |
| Pedaltrain Novo 24 | 24 × 14.5 in610 × 368 mm | Fits | 470 mm | 4 | Try it |