Mantle Analog Bass Preamp // D.I.

Walrus Audio Mantle Analog Bass Preamp // D.I. power requirements

• 9V DC · centre negative · needs a supply of at least 500mA

  from the maker

  “Only use a 9 Volt DC, Center Negative, 500mA to power the pedal. … Power Requirements: 9VDC, 500mA, Center-Negative, 2.1mm. … Internally boosted to +24V for higher headroom.” source

  Checked 2026-10-13

Size

154.78 × 119.35 × 57.98 mm (6.09 × 4.70 × 2.28 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 CS1111 outputs · isolatedSweetwater
• Truetone 1 SPOT Pro CS1212 outputs · isolatedSweetwater