Empress Effects · Modulation · discontinued

Tremolo2

9V · 100 mA · maker

Empress Effects Tremolo2 power requirements

9V DC · centre negative · draws 100mA
the voltage it ships for · from the maker
“Power Input Voltage : 9V DC (Negative tip) … Power Input Connector : 2.1mm barrel connector (Negative tip) … Power Consumption : 100mA” source
Checked 2026-10-13
12V DC · centre negative · needs a supply of at least 100mA
from the maker
“Plug a 9-12VDC power supply into the power jack on the left side (2.1mm barrel connector, negative tip). … 9V - 12V DC. 100mA or greater” source
Checked 2026-10-13

114.3 × 88.9 × 50.8 mm (4.50 × 3.50 × 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.