Reading through the manual, it appears this is a hybrid pedal, similar to the Empress Tremolo, in that the audio path is entirely analog, but a PIC or other micro-controller is included for tap tempo, and what may well be all aspects of modulation. The net result is that current consumption (avg 50ma) tends to put it well out of the range of batteries for all but the shortest of gigs (Ed Sullivan or AGT appearances?).
It includes a ramp-up/down function between the two variable speed settings, similar to the Line 6 Roto-Machine.
The "Edge" control is different. Tell me what you think: "Our edge knob is two things…One part depth control, changing the phase from a more subtle effect, to one that is full out spacey as the knob moves clockwise. The other part is envelope filter, changing where the signal is phased the hardest. At the farthest setting clockwise, your highs are most enhanced. When turned fully counter-clock, the low end of your phaser gets the boost ."
To me that sounds almost like a BMP tone control in the feedback/regen loop, except that presumably the middle setting gets you no regen. So it may function sort of like a BMP, but isn't exactly the same. The Marshall Edward Compressor also has a BMP-like control that adjusts the balance of high and low end feeding the rectifier, in complementary fashion, but with no middle cancellation position.
In any event, an interesting feature, and something that should be simple enough to implement in a different fashion in DIY pedals. Just note that, as a passive control, inserting something like a BMP tone control in the feedback loop would likely require some sort of gain applied to compensate for signal loss. That could be a simple op-amp stage set for whatever gain is needed to offset the passive loss.
Now that I think of it, if one had an inverting op-amp stage, either before or after such a feedback-tone control, the feedback resistance in the op-amp stage could be used to drop gain down to zero for zapping regen, or increased to provide suitable compensatory gain. Plus, since it would be an inverting stage, you could feed the signal back from the last stage to the first, not unlike what was done in the early FET-based Ross phasers (the feedback signal needs to be opposite phase to what it is combined with at the mixing node).
Forgive me as I think out loud.