Eurorack

Eurorack is the most popular standardized format for modular synthesizers. Developed by Doepfer in the 1990s, it has grown into a massive ecosystem with thousands of compatible modules (oscillators, filters, effects, sequencers, etc.) from manufacturers worldwide. Eurorack modules are 3U tall and their width is measured in HP (horizontal pitch). They are mounted in a powered case. Eurorack is beloved for its modularity, compactness, and limitless creative potential.