Yeah, I guess during regular recording, the JB3 won't pull more than 1amp... I used a 1amp adapter a while back for a few shows and it seemed to work fine. I was just paranoid so I got that walmart 2amp adapter but it shit the bed on me a few months back. I'm looking into that VR box that is being discussed now... still gotta find a walmart lion battery though.... it's hard to find all this shit up in canada.