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Roland E-4 AIRA Compact Voice Tweaker

Affordable Vocal Transformation



Order now for delivery to you on Thu 30th Jun 2022.

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SKU: E-4

    Product Description

    Roland's E-4 Voice Tweaker is an essential, affordable tool for any creative live vocalist. Take your voice to new heights using a variety of premium effects, an integrated looper and transformative vocal functions and add excitement and dynamism to any show. 

    Key Features 

    • Vocal performance unit equipped with voice transforming effects 
    • Use format and pitch sliders to tweak your sound 
    • Optional BOSS TRS MIDI cables allow you to hook up to any other AIRA Compact
    • Rugged construction and controls 
    • 3.5 hours of use per charge via the integrated lithium-ion battery 
    • Class-compliant MIDI and USB-C audio interface - no driver installation required 
    • MIDI, audio and sync I/O with additional AIRA Link 
    • Utilise the Scatter knob to conjure interesting percussive effects 
    • Harmony, vocoder and Auto Pitch vocal effects
    • Headphones output
    • Inline mic support 
    • 1/4-inch mic input (featuring a broad gain control)
    • Take charge of harmony, vocoder and pitch parameters via external MIDI control 
    • 24-second looper (offering instant BPM detection, undo/redo and unlimited overdubbing) 
    • Remove undesired sounds using a noise gate and low-cut filter 
    • Use techo, tempo delay, chorus and reverb to process your audio output 

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    Vocals on the Road  

    The E-4 isn't just reserved for the stage. Thanks to 3.5 hours of run time on a single charge via an onboard lithium-ion battery, you can get experimenting whenever and wherever inspiration strikes! 

    AIRA Compatibility 

    Connect the E-4 to the J-6 Chord Synth or the T-8 Beat Machine for even more sonic scope. You can also hook up a headset, handheld mic, or use the inline mic on a pair of earphones to perform exactly how you like! USB-C and MIDI connectivity ensure that the E-4 can interface with apps, external hardware instruments and your favourite DAW too.


    Dissect your sounds, cut it into slices, and tweak it all with a simple turn of the intuitive Scatter knob. Or, why not apply layers of your voice via overdubbed effects and loop it with the 24-second looper.

    Vocal Soundscapes

    By harnessing the in-built arsenal of trigger looper controls, sonic shapers and Scatter effects - alongside format, pitch and other alterable settings - you can transform your voice in either futuristic, or more traditional ways. For example, why not add some robotic flair, or change the gender of your vocal entirely!

    That's not all; instant harmony effects, such as chord and key voicing changes, plus Auto Pitch let you craft a vocal sound influenced by the greatest modern day chart music. 


    Effect Type

    • PITCH
    • REVERB
    • LOOPER

    Maximum Recording Time

    • Approximately 24 seconds


    • 7 segments, 4 characters (LED)


    • 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).


    • 188 (W) x 106.5 (D) x 41.7 (H) mm
    • 7-7/16 (W) x 4-1/4 (D) x 1-11/16 (H) inches

    Weight (including batteries)

    • 290 g
    • 11 oz


    • Leaflet ”Read Me First”
    • USB Type-C to USB Type-A cable

    Written by Will Brook-Jones

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    Here at Andertons Music Co. we believe that we stock some of the best musical equipment in the world. That's why we want to make it as quick and easy as possible for you to get your order, safe and sound!

    We offer a wide range of delivery options to help fit around your busy lifestyle without compromise. This includes free, named-day delivery for most UK postcodes on orders over £99 which are in stock, Saturday & Sunday deliveries, and competitive delivery rates worldwide.

    Please note: Some UK postcodes including remote areas and Northern Ireland are subject to charges.

    You can find full details about the services we offer, including details on our international delivery charges, on our main delivery page. Click here to read more.

    Customer Reviews


    1 reviews





    Trusted Customer9th Jun 2022

    Pretty good, shame the mix audio in can’t be captured by looper though.

    Value 4Looks 4Durability 4Sound 4

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