Metrum is a dedicated kick drum synthesizer that allows users to build custom bass drums by layering sounds. It uses a four-slot architecture:

While specific bundle contents can vary by retailer, expansions often cover styles such as EDM, Trance, Techno, House, and Hardstyle .

Each expansion is designed by professional sound designers like Manuel Schleis, ensuring the sounds are "club-ready" with pre-configured modulations and macro controls. Key Features of Expansion Packs Vengeance Producer Suite - Metrum / Overview

The bundle typically includes a variety of genre-specific expansions to extend the factory library.

A dedicated sub-oscillator for the low-end "thump".

Features real-time graphic envelopes for pitch and amplitude, six built-in high-quality effects, and a deep modulation matrix. Expansion Bundle Highlights