Yep, the "continuously fretted" bass as Harry pointed out, has a very distinct sound. I've heard it on a couple out-take tracks from Rumours and Tusk albums... I strongly suspect it was used on "Silver Spring" and maybe "Oh Daddy" too. "Over and Over" also sounds fretless to me, but the tone is slightly different.
On this bass, I'm really curious about the electronics... it looks like Series I in all the usual format, but with a master volume like John's other basses, but then there's a whole other array of knobs and switches underneath them. Just reading in the description, there's a bit from Rick Turner (which is another classic RT stream of consciousness post, one should not miss btw...
) he seems uncertain as to what these extra controls are for too, and suggests maybe a passive treble cut.
Could this be something else other than a superfilter? Band pass? Mellow/bright switches?
I still just can't imagine McVie twiddling with all that stuff on stage.
