Roland E-4 Voice Tweaker Creative Vocal Processor

The Roland E-4 Voice Tweaker is a compact yet powerful vocal effects processor designed for modern performers, producers, and streamers seeking creative vocal transformation in real time. Built with Roland’s renowned sound-engine expertise, this portable unit allows you to reshape, harmonize, and manipulate your voice with studio-quality precision, all within an intuitive and performance-ready interface. Whether you're creating electronic music, enhancing live vocals, or experimenting with unique vocal textures, the E-4 delivers professional-grade results in a highly accessible format.

Equipped with a versatile range of vocal effects—including Auto Pitch, Vocoder, Harmony, and Scatter—the E-4 empowers users to craft everything from subtle pitch correction to extreme vocal modulation. Its onboard looper adds another layer of creativity, allowing you to build vocal phrases and layer performances on the fly. With seamless connectivity options and USB-C support for both audio and MIDI, the E-4 integrates effortlessly into studio setups, mobile rigs, and live performance environments.

Designed for portability and convenience, the E-4 features a rechargeable lithium-ion battery, offering hours of continuous use without being tethered to a power outlet. Its compact footprint and durable construction make it an ideal choice for musicians on the move. Whether you're performing on stage, streaming online, or producing in a home studio, the Roland E-4 Voice Tweaker provides a powerful, flexible, and inspiring vocal processing solution.

Key Features

• Real-time vocal processing with professional-quality effects
• Includes Auto Pitch, Harmony, Vocoder, Pitch, Formant, Scatter, and more
• Built-in looper for layering vocal performances
• Compact and portable design for mobile use
• USB Type-C connectivity for audio and MIDI integration
• Rechargeable battery with extended operation time
• Flexible input/output options for live and studio setups
• Intuitive controls for quick and expressive performance adjustments

Technical 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: 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).

Dimensions: 7-7/16" x 4-1/4" x 1-11/16"
Weight: 11 oz

Use Cases

• Live vocal performance with real-time effects
• Streaming and content creation setups
• Beatboxing and loop-based performance
• Podcasting with enhanced vocal processing
• Mobile music production and songwriting

What’s Included

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