Hi to everyone!! I'm planning my new Acoustic Pedalboard after purchased an used Boss Rc-300. Here are pedals I want to use: TC Helicon Harmony Singer (12V - 400ma) Mooer Funky Monkey (9Vdc - 100ma) L.R.Baggs Venue Acoustic Preamp (9Vdc - 100ma) EBS Octabass (9Vdc - 100ma) Neunaber Wet Reverb (9Vdc - 100ma) Boss RC300 (9Vdc - 500ma) Usually I use One Spot standard, but I'm not suore that Harmony Singer works with 9Vdc even if someone use with it with no issue. I figure to buy new One Spot Pro CS7 but 12V output deliver 250ma. Please, someone could help me? Thanks in advance!! Cheers from Italy. Francesco.