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The E-4’s deceptively simple interface hides a world of vocal opportunity. Auto Pitch, harmony, and vocoder effects are just the beginning. Reverb, tempo, delay, and chorus effects are freely available throughout the looper’s 24-second recording space, all in real time. The Scatter knob yields compelling rhythmic flares, situated alongside pitch, formant, and reverb sliders, dealing a satisfying user experience. Shape your output with the onboard low-cut filter and noise gate, with unlimited overdubbing, undo/redo, and automatic bpm detection. Craft everything from serene vocal vistas to volatile soundscapes, thanks to the E-4’s intuitive integration that is comprised of a 1/4-inch mic input and audio, MIDI, and sync I/O. Class-compliant USB-C/MIDI interfacing requires no additional drivers, and the onboard pitch and vocoder’s melodic parameters can be controlled externally.


  • Lightweight and compact design means portability without sacrificing power
  • Vocoder, Auto Pitch, and harmony modes deliver studio-ready fine-tuning
  • Straightforward formfactor ensures accurate, satisfying tactility
  • Hit the Scatter knob to take your vocals on a wild rhythmic ride
  • Robust range of processing and FX allow for limitless vocal modulation
  • Historic Roland synth waveforms let you craft unique vocoder patterns
  • Onboard MIDI, audio, and synch I/O, as well as USB-C, provide endless interoperative potential with DAWs, controller interfaces, and even additional Aira Compact devices
  • Construct a symphony of sounds with the unlimited overdubbing capabilities in the 24-second looping window
  • Rechargeable lithium-ion battery means 3.5 hours of studio-ready FX, all on the go
  • Weight: 11 oz.
  • Dimensions: 188 (W) x 106.5 (D) x 41.7 (H) mm / 7.4 (W) x 4.25 (D) x 1.7 (H) inches

Roland E-4 Voice Tweaker NEW!!!


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