WOK tells us that REFO-D is a delay plugin with a reverse-forward option. Additionally there is a filter and distortion in the feedback path. The delay time can be set in milliseconds or synced to host.
REFO-D is available for free as a 32bit VST plugin for Windows.
Pricing and Availability:
Free download. Donations welcome.
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8 step sequencer with a whole host of tricks up its sleeve and some very pretty lights