Voodoo Lab - Expanding the outputs of a Pedal Power 2 PLUS can be done using the Pedal Power X4 with its AC adapter connected to the rear courtesy outlet. Using this
Voodoo Lab Pedal Power 2 PLUS 8-output Isolated Guitar Pedal Power Supply - Stage 1 Music
Voodoo Lab Pedal Power 2 Plus Power Supply | Guitar Center
Voodoo Lab Pedal Power 2 Plus – Eastside Music Supply
Voodoo Lab Pedal Power 3 PLUS High-current 12-output Isolated Power Supply | Sweetwater