SpaceVibe TonePrint by TC Electronic
The SpaceVibe TonePrint is a slow sweeping sound with extreme feedback. It uses a Flanger on top while the modulation speeds of both FXs are controlled with the speed knob and are divisors of the main UniVibe speed, so using the ramp feature gives you a tempo matching speed at all positions.
Have an iOS or Android device? Use the TonePrint AppDownload the TonePrint EditorSpaceVibe TonePrint by TC Electronic