I was just wondering, when somebody asks about an old school or era dependent type tone, whats the criteria? I mean are you referring to recordings from that era or what. Most of the old recordings (late 60s to mid 70s) were, I believe mostly all live style recordings (the band or at least the rhythm section all played at the same time) and bass players played through an amp more often than not. The advent of multi track (8 tracks and up) recording and larger recording consoles made it possible to maybe have a track for the Bass only and a way to record it direct but even then rarely did a Bass sound like it started when the mix was done. My point is, if you werent there or havent played an older instrument , it seems to me that to get that old school vintage sound you would need to know what the bass was, the amp, the mic recording and the mic placement, what if any, out board gear was used to processes the Bass track and what the [mastering engineer] did to the low end so the vinyl wouldnt launch the needle, even newer releases cut from the master to CD still have all that before mastering stuff going on. Things like warm smooth punchy and tight and bright tone all seem easier to get than vintage or old school tone. My first good Bass was a 62 P-Bass so I know what those things sounded like, IMO the newer stuff sounds the same only now the amps are much better, and the Bass is almost always recorded direct (with a little amp recording mixed in to taste).