IMO the 70's tone was the opposite of rich and warm. Those pickups were defined and had less low end. Lots of string noise and harmonics. Most would say they are thin sounding due to the lack of richness. They were replaced on a regular at the time. It's not a very appreciated era in the history of Fender basses and that's why that tone is not heavily replicated.I'm still confused as to what defines, pickup-wise, the "'70s sound" - my recollection was that aftermarket pickups, in addition to being hotter, just had more *sound* - you know, more richness / harmonic complexity - noticeably so. So the "stock sound" would be... what - deader? Duller? I'm not trying to troll here - I'm really curious (as a guy who owned multiple CBS Fenders and replaced the pickups in *all* of them)
thx