Electro-Harmonix · Distortion

Bass Blogger

9V · 10 mA · maker

Electro-Harmonix Bass Blogger power requirements

9V DC · centre negative · draws 10mA · needs a supply of at least 25mA
the voltage it ships for · also runs on a 9V battery · from the maker
“The barrel connector on the front of the Bass Blogger is for a 9-volt battery eliminator or AC Adapter capable of delivering at least 25mA of current. … The inner ring of the 9-volt battery eliminator must be negative, the outer ring positive. … The actual current draw of the Bass Blogger is 10mA.” source
Checked 2026-10-13
9.6V DC · centre negative · draws 10mA
from the maker
“Power Supply 9V battery included (optional 9.6VDC-200mA power adapter not included) … Current Draw 10mA” 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.