MOTM

> They (he?) have a thing called the "Formant Pro 2000", so 
> maybe it's  
> a variation/evolution of the Formant.
> 
> JH should be able to answer this one.

I bought the book. Quite ridiculous to name this "Pro"
decades after the original Formant.

They tell the aspiring diy builder to select transistors
for a Moogish ladder filter, and then they ruin the
whole symmetry with a differential amp that has twice
the input impedance on the positive vs. negative
input. Big laugh, money wasted. Sold the book
on ebay. (I *told* the buyer what I think of these
circuits, but he wanted it anyway. (;-))

JH.