What is Eurorack?

A Eurorack synthesizer is a type of modular synthesizer that uses the Eurorack format which is a standardized system for synthesizer modules. The Eurorack format was  originally specified in 1995 by Doepfer Musikelektronik (Wikipedia). The Eurorack format was not the first modular synthesizer format; many formats with different sizes and cable types preceded Eurorack before it became widely accepted as the standard format. Buchla and Serge formats are still popular and some companies continue to make modules in 5U as well, such as Noise Engineering.

Modules are measured in rack units (U) and horizontal pitch (HP). A typical eurorack module will be 3U or 3 rack units and be anywhere from 2HP to 60HP on the large end. Modular synthesizers are composed of individual modules that can be connected together using patch cables to create complex audio signals and generate a wide range of sounds.

Modular synthesizers are popular among musicians and sound designers because of their flexibility and the wide range of available modules. There are many different types of modules, including oscillators, filters, envelopes, and effects, which can be combined in various ways to create a virtually unlimited number of sounds.

In addition to their use in music, modular synthesizers are also often used in other areas, such as sound design for film and television, and experimental art installations.

Why do people love modular synthesizers?

There are several reasons why people love modular synthesizers. One of the main reasons is the flexibility and control they offer. Unlike traditional synthesizers, which have a fixed set of sounds and capabilities, modular synthesizers allow users to create their own custom synthesizer by choosing and arranging the individual modules they want to use. This allows users to create unique sounds and experiment with different configurations, making modular synthesizers a versatile and creative tool.

Another reason people love modular synthesizers is the sense of community and collaboration that surrounds them. Many modular synthesizer enthusiasts enjoy sharing their ideas and creations with others, and there are many online forums and communities where people can discuss modular synthesizers and share tips and techniques. This community aspect of modular synthesizers can be very rewarding and can lead to new friendships and collaborations.

Finally, many people enjoy the hands-on nature of modular synthesizers. Unlike traditional synthesizers, which are often controlled using buttons and knobs on the front panel, modular synthesizers require users to physically connect the modules using patch cables. This tactile approach to sound creation can be very satisfying and can provide a deeper level of engagement with the synthesizer.