Spied on muffwiggler.com, notes taken from Cary Robert's retrosynth.com, regarding the Taurus 1, the legendary Moog which sounds killer and not quite like other Moogs:
-the AC coupling between the VCF and VCA was designed so that the RC product would increase the bass at a corner frequency of 20hz. There is a bass boost built into the Taurus pedals!
-The other element of the bigness of Taurus I pedals is that the filter is driven pretty hard.
Noting that Jurgen Haible has already written about getting a very nice tone out of the 904a by overdriving it. Cary stated that the Taurus 1 uses the 904a design, so it makes sense to run some gain after your 904a (using a 902? Aren't those 2X gain?) and ripping it up.
