I have a sort of sound in my head.
It's a bit like Boz Burrell on 'Can't Get Enough' (fretless P), Paul Simonon on London Calling (P) and Ronnie Lane on Stay with Me (?) so it's not very bass specific, and I assume it's a classic softly overloaded valve amp sound.
It's pretty much for those songs and songs in that vein...
Of course I'm a J-bass fan....
Does that help?
Edit actually I have no idea what this is...