ITunesArtwork Scree Rp1 0

Delay I

Create trailing echos, simple slapbacks or precise rythmic effects.

Delay II

Add Chorus, Vibrato, Flanger, Tremolo, Phaser & Panning effects with a second modulation delay.

Flexible Routing

Combine both delay lines in any way you want or use them independently.

Stereo Processing

From input to ouput, RP-1 applies true stereo processing in every step of the signal chain.

Flowcharts Gray


Delay Section

  • Delay times from 10ms to 2000ms or 1/32th to 4bars
  • Lowpass and Highpass filters (Pre Delay)
  • Stereo Spread
  • Tempo Sync via AU Host or Ableton Link
  • Tap Tempo and Manual Tempo
  • Normal, Dotted and Triplet mode
  • One Button Looping
  • Effect Bypass

Mod Section

  • A total of 7 different algorithms to choose from including Chorus, Vibrato, Flanger & Panner
  • New in 1.2: Tremolo, Phaser, Mod Delay
  • Feedback
  • Modulation Amount
  • Modulation Frequency from 0.1hz to 10hz
  • Routing Pre/Post Delay
  • Mod Bypass


RP-1 supports all the standards you might expect to find in a modern iOS Music Application.


AudioUnit Extension

RP-1 is built as a Audio Unit Extension, use it like a plug-in in your DAW.


Inter-App Audio

With Inter-App Audio you can use RP-1 when recording into other apps such as Garageband.


AudioBus Filter

Use RP-1 as a AudioBus Filter to process audio from virtually any other app.


Ableton Link

Sync RP-1's internal tempo with other Apps and Ableton Live.


Aside from working great with other apps and technologies, RP-1 can handle external audio as well.

USB Audio Interface

Use RP-1 with an external audio interface to process audio while recording or setup RP-1 as a send effect on your mixing desk.

Internal Microphone

Just want to have some fun? Connect RP-1 to the internal Microphone.

Audio Demos

Have a listen to some selected audio demos.


from the Apple App Store


v1.2 (107) Universal App



Read the RP-1 User Manual