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Powering pedals question (Joyo JP-02)


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  • Powering pedals question (Joyo JP-02)

    The story: I just got two cheap Joyo JP-02 power supplies so I can finally get rid of ye olde daisy chaine and its noises, but I read in an Ultimate Guitar review (http://www.ultimate-guitar.com/reviews/guitar_effects/joyo/jp-02_power_supply_2/index.html) that since it's not truly isolated, powering certain effects won't work: "Like a lot of affordable power supplies it does not have isolated grounds! That means you can not use your Vintage positive ground effects, without destroying your effects and/or power supply (No: that has nothing to do with positive or negative center connectors)."

    And now I wonder - are any of my effects ground positive? Where can I look it up?

    This is what's on my board:

    Boss NS-2 Noise Suppressor ->
    Vox V847A Wah
    Seppuku Mind Warp
    MXR Phase 90
    MI Audio Boost N' Buff
    Boss DF-2 Super Feedbacker & Distortion
    MXR Distortion+
    Nine of Swords Funeral Party (fuzz, probably a clone but I don't know which one)
    Nine of Swords Tyrant (D*A*M Meathead clone)
    Black Arts Toneworks Pharaoh
    Boss GE-7 Graphic Equalizer
    -> Boss NS-2 Noise Suppressor
    Electro-Harmonix Memory Toy
    Boss TR-2 Tremolo
    Boss CH-1 Super Chorus
    Electro-Harmonix Stereo Memory Man with Hazarai
    Hardwire RV-7 Stereo Reverb

    Note that I've run them with the daisy chain (a Godlyke Power-All) without any problems, so my guess is it shouldn't be a problem now either, but I just want to make sure since I'm a complete n00b at all things natural science.

  • #2
    If you've already run all of them with a daisy chain, they're all negative ground. If one of them had been positive ground, connecting it to the daisy chain would have shorted out all power.
    The Power List


    • Faldoe
      Faldoe commented
      Editing a comment

      really should have gotten a PP2+ There are some things to cheap out on and somethings not to. A good PS is one you shouldn't. The Joyo like the DC power brick is just a glorified daisy chain, they're not isolated, like the PP2.

      And you have lots of pedals. When I had more pedals on my board than the PP2+ could power, I'd use a 1 Spot with a daisy chain plugged into the accesory outlet on the PP2+