Compressor

Empress Effects Compressor 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

• 18V DC · centre negative · needs a supply of at least 100mA

  from the maker

  “9V - 18V DC negative tip 2.1mm jack. 100mA or greater” source

  Checked 2026-10-13

Size

114.3 × 88.9 × 50.8 mm (4.50 × 3.50 × 2.00 in)

Width × depth × height, from the manufacturer.

Power supplies that can run it

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

• Walrus Audio Canvas Power 1515 outputs · isolatedSweetwater
• Fender Engine Room LVL1212 outputs · isolatedSweetwater
• Rockboard ISO Power Block V12 IEC12 outputs · isolatedSweetwater
• Voodoo Lab Pedal Power 3 Plus12 outputs · isolatedSweetwater
• Truetone 1 SPOT Pro CS1212 outputs · isolatedSweetwater
• Gator GTR-PWR-1211 outputs · isolatedSweetwater