Electro-Harmonix · Filter · discontinued

Stereo Talking Machine

9.6V · 185 mA · maker

Electro-Harmonix Stereo Talking Machine power requirements

9.6V DC · centre negative · draws 185mA · needs a supply of at least 200mA
the voltage it ships for · digital · from the maker
“Power Supply 9.6VDC-200mA power adapter included … Current Draw 185mA” source
Checked 2026-10-13
9V DC · centre negative · draws 185mA · needs a supply of at least 200mA
digital · from the maker
“The Stereo Talking Machine requires 185mA at 9VDC with a center negative plug. The STM does not take batteries. … The STM requires 9 – 9.6VDC at 200mA with a center negative plug. The STM accepts Boss™ style AC adaptors. The actual current draw of the STM is 185mA.” source
Checked 2026-10-13

146.05 × 120.65 × 63.5 mm (5.75 × 4.75 × 2.50 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.