RP-Delay from Rob Papen is a delay plug-in that features regular delays, along with FX routings that allow the delay to function beyond typical delays. Six delay lines and eight multi-mode filters can all operate at once in each of several delay modes. In addition to the basic delay models like a simple mono delay and a stereo delay, the plug-in features a tape-sound delay which allows for changing tape length without inducing any clicks.
A sound reverser can reverse the input, while simultaneously reversing one of the delay lines. The reverse sound can also be triggered via an on-screen keyboard, generating totally new sounds, and sending them into the reverser with via dedicated filters and distortion. The delays, filters, and reverser can all be modulated by the built-in modulators. There are four modulation sequencers, four LFO's, and four envelopes, complete with several trigger options.