Power Adapter Supply 9V DC 1A For Guitar Effect Pedal With Cable 5 Way Daisy Chain Cord The size of the jacks 2.1mm, OUTPUT: 9V DC, 1A (1000mA), negative center INPUT: Universal voltage AC 110V~240V 50/60Hz 5 ways cable chain cord could feed your 5 pedals in the same time, no more extra power adapter, keep your pedalboard neat and tidy. Professional noise isolation performance Fit for most 99% guitar effect pedals currently available