Roland Aira Compact E-4 Voice Tweaker is an outrageously jammable box of fun that harmonizes, auto-pitches, vocodes, loops and glitches your voice and anything else you feed it. Flip through hands-on controls to manipulate the sound, and chain in Aira Compacts and other electronic instruments and let them ride in perfect sync.
- 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
- 1/4" 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 TRS MIDI cables (sold separately)
Inspiring Roland vocal processing
E-4 combines powerful voice transformer tools and standard vocal effects with a tactile interface that's meant to be played. This lean, mean machine puts a treasure trove of top-quality processing in a go-everywhere gadget that's endlessly enjoyable and amazingly affordable.
Perform with sound
By working E-4's inviting panel, you can go from traditional vocal enhancements to punchy beatboxed grooves to striking alien soundscapes, all in a single performance. Select different sonic shapers, trigger looper controls, cycle through Scatter effects and tweak pitch, formant and more in the flow.
Harmonic explorer
Take your singing to the next level with automatic harmony effects. Set the key and chord voicing on the fly and bring head-turning flair to any song. And with auto pitch, you can dial in everything from subtle tuning fixes to the hard-tuned sounds heard in mainstream pop tracks.
Channel your inner robot
Use direct-access tools to instantly change your vocal gender, conjure sounds from outer space or transform yourself into a mechanical persona – good or evil is up to you. There's also a powerful vocoder, which you can drive from a large pool of onboard synth waveforms, E-4's pitch functions or an external MIDI keyboard for an endless variety of textures.
Loop and Scatter
Turn one voice into an entire orchestra using the 24-second looper. Overdub layer after layer with E-4's effects to create wild, vocal-driven rides. Then slice and dice with the expressive Scatter knob, which chops your sound into colorful bits that you control with a twist.
Link up and go
Connect a handheld mic to the front input for performing, or use a gaming headset or the inline mic on your earbuds to bring fresh vocal fun to your next livestream or podcast. Sync with other Aira Compacts like T-8 Beat Machine and J-6 Chord Synthesizer to expand your range. Or interface with computer DAWs, mobile music apps and hardware instruments via USB-C or MIDI.
Everywhere at once
E-4 creatively accentuates vocals anytime and anywhere. The lithium-ion battery provides up to 3.5 hours of power per charge, and the rugged Roland build will support inspired magic and mayhem for a long, long time.
| Specification | Value |
|---|---|
| SKU | ROL-E4 |
| Vendor | Roland |
| Effect Type | Multi-Effects |
| Included From Manufacturer | USB-C to USB-A cable |
| MPN | E-4 |
| Product Unique Features |
24-second looper with unlimited overdubbing, undo/redo and automatic BPM detection Dial up unique rhythmic effects with the Scatter knob Low-cut filter and noise gate to eliminate unwanted sounds |
| Control Connections |
1/8" sync input 1/8" sync output 1/8" MIDI input 1/8" MIDI output |
| Effects |
Auto pitch Harmony Vocoder Pitch Formant Scatter Reverb Looper |
| Audio Inputs |
1/4" microphone input 1/8" stereo input |
| Audio Outputs | 1/8" stereo output with support for inline mic |
| Power Adaptor |
Built-in lithium-ion rechargeable battery Power/charging via USB port |
| Product Weight | 11 oz. |
| USB Functionality | Recording Interface |
| Width | 7.4375" |
| Depth | 4.25" |
| Height | 1.6875" |
Roland/Boss products are covered by Roland Corporation's limited 2-year warranty. Roland Corporation U.S. warrants to the first consumer only of a covered product purchased from an authorized Roland dealer in the U.S. that this product will be free from defects in materials for a period of five (5) years or defects in workmanship for a period of two (2) years. Please register this product online to establish the date of purchase (not a requirement for warranty service). For more information, please visit www.roland.com.
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