It is really useful to put your devices together. And it has its own power supply on it which is perfectly working. I have ten pedals. Mxr dyna comp, flamma fs21, mxr carbon copy, electro harmonix wom flanger, phase90, small clone, rat2, polytune3, boss sd1 and hall of fame. Accept flanger all the pedals are working perfectly with power supply. Flanger needs its own adapter.