Chase Bliss Audio · Modulation · discontinued

Gravitas

9V · 20 mA · maker

Chase Bliss Audio Gravitas power requirements

9V DC · centre negative · draws 20mA
the voltage it ships for · also runs on a 9V battery · from the maker
“This pedal consumes ~20mA and should be operated with an alkaline 9V battery or a standard 2.1mm 9V – 18V DC center negative adapter.” source
Checked 2026-10-13
18V DC · centre negative · current not published
from the maker
“a standard 2.1mm 9V – 18V DC center negative adapter. If you want more output and headroom out of the pedal, we recommend powering it at 18V.” source
Checked 2026-10-13

66 × 121 × 60 mm (2.60 × 4.76 × 2.36 in)

Width × depth × height, from the retailer listing.

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