Kagamine RIN / LEN V4X

From Power to Softness – Expressive Dual Vocals with E.V.E.C. and Cross Synthesis

KAGAMINE RIN/LEN V4X is a next-generation virtual singer featuring eight unique voice libraries, improved pronunciation, and enhanced expressiveness. The voices are clear, cute, and carefully tuned, combining the charm and power of the original software. Soft and breathy voice variations have been added to provide even more vocal variety.

The innovative E.V.E.C. (Enhanced Voice Expression Control) and Cross Synthesis functions let you precisely control expression, tone color, and breath, allowing you to create dynamic performances—from soft, emotional passages to intense phrasing with loud vocals. Combined with the Growl function, you can produce powerful, expressive singing voices with incredible presence.

Japanese Voice Libraries (Rin)

• RIN POWER – Cute but strong female voice.
  Tempo: 50–170 BPM | Range: F2–E4 (with E.V.E.C.)
• RIN WARM – Gentle, warm female tone.
  Tempo: 50–160 BPM | Range: F2–C4
• RIN SWEET – Sweet, whispery voice with subtle breath effects.
  Tempo: 55–155 BPM | Range: G2–D4

Japanese Voice Libraries (Len)

• LEN POWER – Strong, youthful male voice with bold inflections.
  Tempo: 60–170 BPM | Range: D2–D4 (with E.V.E.C.)
• LEN COLD – Calm, soft male voice.
  Tempo: 60–160 BPM | Range: E2–C4
• LEN SERIOUS – Soft, slightly melancholic whispery voice.
  Tempo: 55–155 BPM | Range: F2–C4

English Voice Libraries

• RIN English – Bright, natural-sounding young female voice.
  Tempo: 55–155 BPM | Range: G2–B3
• LEN English – Natural, youthful male English voice.
  Tempo: 55–155 BPM | Range: E2–G#3

E.V.E.C. & Cross Synthesis – Advanced Expression Control

• Voice Color: Switch between Power (stronger, more tense) and Soft (gentler, relaxed) vowel tones.
• Voice Release: Control breath at the end of phrases—from short breaths to long, atmospheric endings.
• Pronunciation Extension: Strengthen consonant-to-vowel transitions for expressive attacks. Ideal with Growl for intense, screaming vocals.
• Cross Synthesis: Blend multiple voice libraries to create smooth transitions and hybrid vocal tones.

Vocal Editing Environment

Piapro Studio works as a VSTi/AU plugin and integrates seamlessly with major DAWs like Cubase, Studio One, Ableton Live, and Logic. It provides intuitive control over pitch, timing, and expression. For simpler setups, the included VOCALOID6 Editor Lite allows natural and expressive singing as a standalone application.

Bundled Software

KAGAMINE RIN/LEN V4X comes with Cubase LE by Steinberg – a fully featured DAW with hundreds of virtual instruments, sounds, and plug-ins, enabling you to start producing complete tracks—from vocals to full arrangements—right after purchase.

MAC

• OS: macOS 10.11 / 10.12 / 10.13 / 10.14 / 10.15 / 11 / 12 / 13
• CPU : Intel Core 2 Duo 2GHz or more, Apple Silicon (Rosetta 2)
• RAM : 2GB or more (4GB or more recommended)
• Install media : DOWNLOAD FILE
• Disk Space : 12GB or more (HFS+, APFS FORMAT)
• Other : A monitor resolution no lower than 1280 x 768 pixels / Internet connection

Windows

• OS : Windows 8.1 / 10 / 11 (64bit)
• CPU : Intel Core 2 Duo 2GHz or more
• RAM : 2GB or more (4GB or more recommended)
• Disk Space : 12GB or more (NTFS FORMAT)
• Install media : DOWNLOAD FILE
• Other : Sound Device (with DirectX Support) / Graphics Card that supports OpenGL 3.0 or higher / A monitor resolution no lower than 1280 x 768 pixels / Internet connection

At least 24 GB of free space is required to download the installer and extract the compressed files.