Electro-Harmonix · Delay

Slap-Back Echo

9.6V · 15 mA · maker

Electro-Harmonix Slap-Back Echo power requirements

9.6V DC · centre negative · draws 15mA · needs a supply of at least 200mA
the voltage it ships for · from the maker
“Power Supply 9.6VDC-200mA power adapter included … Current Draw 15mA” source
Checked 2026-10-13
9V DC · centre negative · draws 15mA
from the maker
“Your Slap-Back Echo comes equipped with an Electro-Harmonix 9.6VDC-200mA power supply. The Slap-Back Echo requires 15mA at 9VDC with a center negative plug.” source
Checked 2026-10-13

50.8 × 92.71 × 50.8 mm (2.00 × 3.65 × 2.00 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.