English Muffy

Tech 21 English Muffy power requirements

• 9V DC · centre negative · draws 55mA · needs a supply of at least 200mA

  from the maker

  “Utilizes included 9V DC, 100-240V universal auto-switching power supply, 200mA, center negative. Tech 21 Model #DC9. … Maximum power consumption: approx 55mA.” source

  Checked 2026-10-14

Size

196.85 × 63.5 × 31.75 mm (7.75 × 2.50 × 1.25 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
• Rockboard ISO Power Block V1615 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 CS1111 outputs · isolatedSweetwater