Custom synthesizers are electronic instruments designed to create and manipulate sounds. Unlike standard synthesizers, which come with fixed features, custom synthesizers can be tailored to meet specific needs or preferences. Musicians and sound designers often choose custom options to achieve unique sounds that reflect their artistic vision. These synthesizers can include various components, such as oscillators, filters, and modulation sources, allowing for a wide range of sonic possibilities. Many custom synthesizers are built by hand or modified from existing models, making them unique pieces of equipment. This customization can enhance creativity in genres like electronic music and film scoring, where sound design is crucial.