Available as an assembled Module and as a DIY project.
This Module is currently available.
Dual (serial) PT2399 delay
Two PT2399 chips roped together in series, one with vactrol control, and 4 different feedback paths.
PCB $18
Panel $20
assembled $180
https://www.nonlinearcircuits.com/modules/p/delay-no-more
http://djjondent.blogspot.com/2015/10/delay-no-more-nonlinearcircuits-build.html
7 Users are observing this
These merchants probably sell this module. Huh?