Microtubes B3K V2

Darkglass Electronics Microtubes B3K V2 power requirements

• 9V DC · centre negative · draws 20mA

  from the maker

  “The Microtubes B3K has a current draw of 20mA. Only use a regulated 9V DC adapter with a center-negative plug.” source

  Checked 2026-10-13

Size

75 × 111 × 43 mm (2.95 × 4.37 × 1.69 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
• Voodoo Lab Pedal Power 3 Plus12 outputs · isolatedSweetwater
• Truetone 1 SPOT Pro CS1212 outputs · isolatedSweetwater
• MXR M238 ISO-Brick10 outputs · isolatedSweetwater
• Strymon Zuma9 outputs · isolatedSweetwater
• Voodoo Lab Pedal Power 38 outputs · isolatedSweetwater