As it states in the title, this is only a delay. It does not contain any feedback or anything else, but is meant to be used as a building block. It may also be used to create modulation effects.
It has a maximum of 4 seconds delay and can also be synced to the host.
The modulation can be controlled externally via the cv input.
There is also a hq option that adds 4x oversampling to reduce aliasing when using modulation on high pitched signals.