Epoxy Block Phasers

[Grant Richter]

I have two phasers that are based on epoxy blocks. The blocks
must be some kind of ladder structure because they are modulated
by exponential current sinks and have differential
input and output drives like a Moog ladder filter. But these
are phase shifters. One is "The Pipe" by Taurus and the other is the
Aries Model AR-329 Phase/Flange.

Question: Does anyone know the structure of the circuitry in the
blocks? They must be similar in design since they are both modulated
the same way. Any help is appreciated, thanks.

Grant