Update: I checked the AH archives and didn't find much other than the following (sounds like the ad above - also felt compelled to share the the comment regarding the dual VCOs. Yep... : )
"To add to the list of modular synths, I also have literature on the
OZNI modular synth from Process Electronics of Centerville, PA.
It touts "Distinctive Quality at a Sensible Price".
The front sheet shows a fairly large system, about 20 modules,
being displayed by a model with fairly nice dual VCOs of her own.
Also about 15 modules available, ranging in price from $75 to
$275, dated 1976. Actually, pretty nice looking stuff (the modules too!),
especially considering the prices."
Update via CAndres in the comments:
"I am to blame for the sexist marketing literature. I was only 22 at the time; seemed like a way to get our product known. The modules were actually of excellent quality, but we completely underestimated what it would cost to produce them in quantity. We actually built 3 synthesizers like this -- I still have one that still works 30+ years later -we built these in 1975 except I hacked in a digital keyboard about 1984."
"Oscillator range .05 - 50Khz;
envelope generator up to 5 minute envelopes, VCOs with sine, square, pulse, sawtooth, VCFs were hi low band pass. We thought we were so cool with 741 op amps; the power supply was completely overdesigned. But the case was not really roady ready -- thin vinyl over foam. We probably should have sold these for $10K to cover what it really cost to build, but at that price, you could get a Moog."
