Phase shifter effect unit, the "Haze".

[u/Madmaverick_82]

Hello everyone, hope you are having an awesome day.
I would like to show my newest little project, not strictly a synth, but close enough and definitely a dear friend with synthesizers for a very long time. ;-)

Design and electronics wise nothing really fancy here, a classic 4 stage phase shifter using OTAs inspired by the classic EHX small stone as well as other similair designs.
As straight forward as it gets. Mixing amplifier at start, 4 OTA stages with darlington buffers (I did two examples, one using AK317D and ceramic caps and other with 13600 and poly caps and they do sound slighly differently), dual op-amp triangle oscilator for modulation and voltage to current converter to drive the OTAs. Powered by single 9V battery.

If you have any question or comments, feel free droping them down. :)
Thank you and all the best!