MXR, Carbon Copy

This Delay is great and unlike alot of new analog delays, it's pretty warm and can nail the old tape slap delay thing pretty well in my opinion.
The Mod button can add kind of a phased layer to the repeated notes.
The Mix knob adjusts the level of the repeated notes
The Delay knob adjusts the delay time
and The Regen is number of reapets.
My favorite setting is using it as a slap delay by keeping the Delay and Regen knobs down to get a very short one repeat delay.
It can also do all the spacy stuff.....but that's not my thing.