Jim, unplugged before there was a name for it. Notice you'll hear an actual bass guitar. I'm pretty sure it's this album that they got the guy who played bass for Elvis, to sit in with them on a couple of sessions. But that's a vague, old fuck memory, so it could have been another album.
My long-winded point is, listen to this fucking _bass_. Would have loved to hear Jack Casady or Berry Oakley sit in with them. Jim needed the foundation of a base, not a organ hitting the low notes:
Youtube thumbnail ripper