I’m longing for my old AD9 but not for the prices I’m seeing on Reverb. I would love an AD9 PCB so that I could box two up in a BB enclosure and have switchable delays.
I just did a write-up on my about this build. [https://www.pachydermpedals.com/pedals/103/] It is not inexpensive with the BBDs used for the delay. I really enjoyed making the pedal though. I have links to the ICs, PCB and build docs on the site. The build doc includes a schematic.