VL1 is a software emulation of the classic Casio VL-Tone, a unique device that combined a calculator with a mini synthesizer. This VST faithfully replicates the original's distinctive character, offering users the nostalgic experience of both music creation and basic calculation in one plugin.

The plugin features five preset sounds alongside a user-programmable sound, allowing for creative customization. It separates synthesizer and rhythm functions into two independent channels, providing precise control over each rhythmic element. This design enables users to tailor their beats and melodies with ease.

In addition to its musical capabilities, VL1 includes a functional desktop calculator, echoing the dual-purpose nature of the original hardware. This blend of sound design and utility makes VL1 a distinctive tool for producers seeking a retro vibe with practical features.