Funny I just watxhed that performance a couple of days ago but didn't spot the Maverick (shame on me).Its Matt Sweeneys bass rig. I love Maverick amps. Also check out Mutemath uses them in the studio for every thing.
And the guitarist uses a Galanti guitar (made in Italy in the 60s) which I have recently got interested in.here's a link to mutemathhttp://www.spinthat45.com/2011/07/odd-soul-in-pieces.html