An analogue synthesiser is a type of electronic instrument that generates sound through analogue circuitry, using voltage-controlled oscillators (VCOs), filters, and amplifiers to create and manipulate audio signals. Unlike digital synthesizers, which use binary code and samples to produce sounds, analogue synths rely on continuous electrical signals, resulting in a warm and rich tonal quality often associated with classic music production. The sound generation process typically involves shaping waveforms, such as sawtooth, square, or sine waves, which can be further modified using various modulation techniques, allowing musicians to create a diverse range of sounds and textures.

Analogue synthesizers often feature hands-on controls, such as knobs, sliders, and switches, providing a tactile and intuitive interface for sound design. This direct interaction allows musicians to manipulate parameters in real-time, fostering creativity and experimentation during live performances or studio sessions. Although they may require more effort to program compared to their digital counterparts, analogue synthesizers are cherished for their unique character, unpredictability, and the organic nature of their sound, making them a favourite among electronic musicians, composers, and sound designers seeking to capture the essence of classic synthesis in their work.