I think what makes it great is the low end is so much more present than others I have tried. It just scratches the old Taurus itch no problem. Crank it loud and proud and you've got the perfect brown tone generator!
The other thing you guys nailed is the beat frequency stuff, really sounds like the Moog oscillators tone. And of course the filter section of the variable is fantastic and really sweeps like they do.
Cheers to you all for making a great instrument.
Dirk
