Special Sauce is for when your tone needs a little something extra. It's a PT2399 based delay with envelope controlled pitch modulation that does chorus, vibrato, doubling, or slap-back delay.
The board is mounted to a wooden standoff with hot glue. It sounds precarious, but it's the best way I've found to mount vero builds.
This circuit is tuned for short, bright delays ranging from 30–150ms or so. The short delay time meant I could use the first CMOS stage of the PT2399 as an input buffer instead of for filtering. A Mosfet at the output supplies 0—35dB of gain. The real trick here is using the voltage on pin 8 as an envelope follower (as discovered by DeadAstronaut). Instead of applying the pin 8 voltage directly to pin 6, I used it to control a 2N5089 set up as a voltage sink. This makes the pitch bending much more pronounced, especially at shorter delay times.
Here's a short demo:
Here's my layout, if anyone else wants to build it.
