I'm not sure that this is the baritone filter sound. To me it sounds more like the mudbucker unfiltered. People tend to foget that an off-the-rack EB-2 had no unfiltered sound per se. You either got the bass cut (baritone) or the mids and the treble (alleged "natural" sound) when pushing the baritone switch, there was no bypass function (just like a Höfner Beatle Bass doesn't have an unfiltered sound with the stock circuit). One of my EB-2s has the toggle switch mod "baritone/bass/unfiltered" and that sound is what I hear with Foxton on that vid (apparently that mod wasn't so outlandish though I never heard about it until late). The suddenly apparent strong mids and better highs in bypass mode add to audibility no end. The bass stops woofing and starts barking. It's not a particularly refined sound, but it gets itself heard.