Roland E-4 Voice Tweaker

Roland E-4 Voice Tweaker

Roland E-4 Voice Tweaker

Experience a world of musical possibilities with the Roland E-4 Voice Tweaker. This versatile and compact device is packed with a wide range of vocal processing tools that let you create harmonies, pitch effects, vocoding, looping, and glitching effects for any source material you throw at it.

The E-4's tactile interface makes it easy to tweak and manipulate the sound with hands-on controls. You can also integrate it with other electronic instruments, such as the AIRA Compact J-6 CHORD SYNTHESIZER, to expand your sonic palette and perform in perfect sync. Whether you're a singer, beatboxer, or sound designer, the E-4 has something for you. With its diverse selection of sonic shapers, looper controls, Scatter effects, pitch, and formant adjustments, you can create everything from traditional vocal enhancements to futuristic alien soundscapes. The device's Auto Pitch feature also allows you to fine-tune your vocal pitch, from subtle tweaks to hard-tuned pop sounds.

The Roland E-4 Voice Tweaker is the ultimate harmonic explorer, allowing you to set the key and chord voicing on the fly and add head-turning flair to any song. And with its affordable price point, it's a go-anywhere gadget that lets you unlock your creativity and perform with sound.

Effect Type












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).


    Leaflet ”Read Me First”

    USB Type-C to USB Type-A cable

Size and Weight


    188 mm

    7-7/16 inches


    106.5 mm

    4-1/4 inches


    41.7 mm

    1-11/16 inches

Weight (including batteries)

    290 g

    11 oz


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David Fraser, Google CET reviews

Friendly and accommodating staff. Great products. They offer discounts to churches (there’s a minimum purchase value). Really does cater to all your audiovisual needs. I’ll surely shop there again.

Shamillia Rock, Google CET Reviews

Quality items at affordable prices with knowledgeable and helpful staff. If what you are looking for is available here it doesn't make sense importing through a freight forwarder.

Mark Buckmire, Google CET Reviews

I've bought from them in the past on a few occasions and it's always been a good experience. I recently made a purchase and happened to have a manufacturer issue. CET immediately replaced the item with the least inconvenience to myself. When buying these types of equipment, it really is best to use a local and reliable supplier and CET is hands down my choice.Plus the staff are always helpful and respectable. Good job folks.

Raees Rahim, Facebook CET Reviews
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