I play most of the time bridge PU soloed, and use the tone pot intensely , to cut highs and get the growl. I hesitate to put an active circuit to my 74' jazz. Audere and U-retro lacks the passive tone, maybe the Aguilar OBP-2 can wire with passive tone and fit the cavity. What do you think, can I get similiar result with active treble cut, than passive tone. What do you use? I don't expect perfectly the same character, just to get the Growl.
