MS-3 Multi Effects Switcher

Boss MS-3 Multi Effects Switcher power requirements

• 9V DC · polarity not stated · draws 280mA

  digital · from the maker

  “Power Supply AC adaptor Current Draw 280 mA” source

  Voltage: “PSA-120S … Input Voltage AC 117 V (50Hz/60Hz) Output Voltage DC 9 V Maximum Current Output 500 mA” source

  Checked 2026-10-14

Size

275 × 97 × 68 mm (10.83 × 3.82 × 2.68 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