looks like the bassist has a marcus miller jazz bass. probably any active preamp w/ jazz pickups. ive got a lakland darryl jones with an audere preamp and i can get this sound w/ the neck pickup w/ the bass boosted and the treble rooled down about half way.hope that helps
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+1 on the Marcus Miller bass and maybe some flatwound strings maybe. I could be wrong though. I can get that same sound with my Fender and Audere pre amp.