sounds like a cool setup! afraid I can't shed any light on the pickup though. I would like to learn more about these pickups myself. specifically mid/late 70s - early 80s.
I think it's pretty common for older pickups to be a bit micro-phonic and gritty. All of my guitars made before the 80's range from really hot and slightly micro-phonic to kinda weak and really micro-phonic. I'm not an expert but I think being micro-phonic adds to the grit.
Sidney Vicious wrote:are earlier vintage Music Master/Duo pickups weak strong hot or what?
i posted in another thread about this, but my comparison of 3 similar guitars with original pickups yielded the following:
64 duo-sonic- loudest and fullest sounding.
72 mustang- slightly quieter than the duo and very bright.
76 mustang- noticeably the quietest, not particularly trebly (this was the ash-bodied one). tended to screech rather than feedback, unlike the other two.
I will do a side-by-side-by-side comparison in the coming days of my '76 Music Master, my partscaster Stratocaster with Custom '69's, and my stock 60's Classic Telecaster played (clumsily) through my '64 Epiphone Galaxie, '68 Champ-Amp, '70 Music Master Bass Amp, and '71 Princeton Reverb and will report back.