Another question about Red Repeat

The manual says " The Time control adjusts the space between your original signal and the echoed signal from 0 to 600 milliseconds".

This youtube clip https://www.youtube.com/watch?v=BRCvJaohr1k
shows that it can't get a zero time setting.

Have there been changes made? (I'd like to get a very very short slapback).

You can never get total zero with this technology.
20ms is plenty short for slapback...most old tape and BBD based cannot go faster as it is.

OK, if it's 20 seconds then that would be good. From that video, if he had the time all the way down it sounds much more than 20ms. I tried to copy that speed with my Nova delay and it was more like 100ms. You can barely hear 20ms and you could definitely hear the delayed signal in the video, but I guess I'll give it a try.