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  • E4

    Roland E-4 Voice Tweaker

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    The 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
    • 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