MXR · Delay

Joshua Ambient Echo

9V · 300 mA · maker

MXR Joshua Ambient Echo power requirements

9V DC · polarity not stated · draws 300mA
digital · from the maker
“The MXR® Joshua® Ambient Echo requires 9 volts (300mA) and can be powered by the Dunlop ECB003 9-volt adapter or the MXR® Iso-Brick™ Pro, Iso-Brick™, and Mini Iso-Brick™ power supplies. This pedal cannot be powered by a battery. … Current Draw 300 mA … Power Supply 9 volts DC” source
Checked 2026-10-13

66 × 111 × 51 mm (2.60 × 4.37 × 2.01 in)

Width × depth × height, from the enclosure standard.

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