Therefore, they are more robust and far less likely to fail on you in the middle of a gig! Most 9v effects pedals & stomp boxes are compatible, including Boss, Behringer, Digitech, Danelectro, Electro-Harmonix, Ibanez, Fulltone, Marshall, Rocktek, Morley, Dunlop, Guyatone, Crispy Cream, Zoom, Daphon, Aria, GLX, etc.