Sounds great......real subtle phaser...might this be a development of your idea to tame your PH-1 in tandem with the impedance proms you had with the phase 90....?
Just be careful with the SVP logo..the pope might have a copyright on it.........
It is based on the same principles as most phasers (including the early Boss ones)... but... it is implemented in a completely different way. It isn't based on the Phase 90, or the PH-1, or anything else really - I'm almost certain that this is the only phaser available done this way. The sound is unique and, IMHO, quite "sophisticated".
The engineering "seed" for for this circuit is from some work done by hobbyists in the mid 1970's in Australia. I've spent hundreds of hours redesigning, refining, and making the electronics "road-proof".
I'm still at the prototype phase (sorry, couldn't help myself!). It will take a couple of months to finalise the design and make sure there aren't any unexpected gremlins, but I expect that sometime in the New Year I'll have a few of these made if anyone wants one...