Megurine Luka V4X offers a refined vocal synthesis experience with two English and two Japanese voice databases designed to enhance expressiveness. Each database supports advanced features such as Cross Synthesis for smooth voice morphing and Growl functions that add dynamic growl-like textures. The Japanese voice bank integrates a unique expression control system called Enhanced Voice Expression Control (E.V.E.C), which allows detailed manipulation of vocal tension, breath, and consonant emphasis at the note level, enabling nuanced vocal performances that range from soft whispers to powerful high notes.

This package includes Piapro Studio, a comprehensive vocal editor plugin compatible with major digital audio workstations, providing intuitive control over all vocal parameters including E.V.E.C and pitch editing. The bundled Studio One Artist Piapro Edition software complements the voice bank by offering over 200 virtual instruments, allowing users to compose complete musical arrangements seamlessly within one environment. The voice recordings, sourced from Japanese voice actress Yuu Asakawa, were captured in a professional studio and carefully processed to deliver natural and expressive vocal outputs for both Japanese and English languages.

Megurine Luka V4X also enhances compatibility by upgrading the VOCALOID engine to the latest version, bringing advanced synthesis capabilities like pitch rendering and snap mode to previous VOCALOID3 users of Hatsune Miku V3, MEIKO V3, and KAITO V3. The integration of these features into a single package makes it an excellent tool for music producers seeking to expand their vocal production possibilities. With its blend of expressive control, versatile voice banks, and powerful production tools, Megurine Luka V4X stands out as a comprehensive solution for vocal synthesis in modern music creation.