Roland AIRA Compact E-4 Voice Tweaker

Roland AIRA Compact E-4 Voice Tweaker


The Roland AIRA Compact E-4 Voice Tweaker allows you to harmonize, auto-pitche, vocode, loop, and rhythmically glitches your voice (or any other audio source you feed into it) using intuitive button and fader controls that you can manipulate both for live performances and studio recordings.

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SKU: ROLE4 Category:
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You may quickly and simply apply a wide range of effects to your vocals using the Roland Aira Compact E-4 Voice Tweaker. Your voice and whatever else you feed it can be harmonized, auto-pitched, vocoded, looped, and glitched by this device. Switch between physical controllers to adjust the sound, and connect AIRA Compacts and other electronic instruments to ride in perfect synchronization.

Use the level control to adjust the gain for your voice after connecting a microphone to the 1/4″ input; an integrated headset microphone may also be connected to the 3.5mm headphone port. Then, using the settings on the front panel, just dial in the desired effect. The E-4 has MIDI ports, sync I/O, a class-compliant USB interface, and is compatible with other AIRA equipment as well as DAWs and mobile devices.

Anytime, everywhere, the Roland E-4 creatively emphasizes voices. The USB connector on this device provides electricity and charges the lithium-ion battery within. The E-4 can run for up to 3.5 hours on a single charge thanks to its battery.

Item Includes

  • Roland AIRA Compact E-4 Voice Tweaker
  • USB Type-C to USB Type-A Cable


  • Vocal performance tool with powerful voice transformer effects
  • Instantly shape the sound with pitch and formant sliders
  • Advanced vocal effects including Auto Pitch, harmony, and vocoder
  • Dial up unique rhythmic effects with the Scatter knob
  • Process the sound output with high-quality reverb, echo, tempo delay, and chorus effects
  • Low-cut filter and noise gate to eliminate unwanted sounds
  • 24-second looper with unlimited overdubbing, undo/redo, and automatic BPM detection
  • Supports external MIDI control of pitch, harmony, and vocoder functions
  • ¼-inch mic input with wide-ranging gain control
  • Headphones output with support for an inline mic
  • Comprehensive connectivity with audio, MIDI, and sync I/O plus AIRA Link
  • Class-compliant USB-C audio/MIDI interface - no drivers needed
  • Lithium-ion battery with up to 3.5 hours of operation per charge
  • Sturdy construction and robust controls
  • Connect to other AIRA Compacts and standard MIDI devices with optional BOSS TRS MIDI cables


  • Processor Type: Vocal Processor
  • Number of Channels: 1
  • Form: Desktop
  • Looper: 24 seconds
  • Effects: Auto Pitch, Harmony, Vocoder, Pitch, Formant, Scatter, Reverb
  • Analog Inputs: 1 x 1/4" (mic), 1 x 1/8"
  • Analog Outputs: 1 x 1/8" (mix out/headphones)
  • MIDI I/O: 2 x 1/8" TRS (in, out), USB
  • Other I/O: 2 x 1/8" (sync in/out)
  • USB: 1 x USB-C
  • Computer Connectivity: USB
  • Power Source: Rechargeable Lithium-ion battery / USB bus power
  • Power Usage: 500mA
  • Height: 1.64"
  • Width: 7.40"
  • Depth: 4.19"
  • Weight: 0.63 lbs.
Weight 2 lbs