Apparently they use Kempers on tour
"Yeah, very first tour using the powered Kempers, so we’re using the powered lunchboxes, but we’re using...I mean the profiles I’m using, it varies from Marshall Super Leads to like uh, I have some Wizards on there and, you know, Diezels, Mesas, it really depends on what the song calls for but yeah, I’m super, super happy with them."