A VOCALIST’S BEST FRIEND.

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.

Features:

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

Specifications

Effect Type	AUTO PITCH HARMONY VOCODER PITCH FORMANT SCATTER REVERB DELAY ECHO CHORUS LOOPER
Maximum Recording Time	Approximately 24 seconds
Display	7 segments, 4 characters (LED)
Connectors	SYNC (IN, OUT) jacks: Miniature phone type MIX (IN, OUT) / HEADSET jacks: Stereo miniature phone type (Stereo, CTIA) MIDI (IN, OUT) jacks: Stereo miniature phone type MIC IN jack: Stereo phone type USB port: USB Type-C® (Audio, MIDI)
Power Supply	Rechargeable lithium-ion battery Obtained via USB port (USB bus power)
Current Draw	500 mA
Expected battery life under continuous use	Approx. 3.5 hours * These figures will vary depending on the actual conditions of use.
Expected battery charging time	Approx. 3 hours * To charge the unit, use the USB port of a computer or a commercially available USB power supply adaptor (5 V, 500 mA or higher).
Accessories	Leaflet ”Read Me First” USB Type-C to USB Type-A cable

A VOCALIST’S BEST FRIEND.

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Roland AIRA Compact E-4 Voice Tweaker