The Ensoniq ESQ-1 is a digital synthesizer that emerged in the 1980s, bringing sonic versatility and advanced features to the music scene of the time. Featuring a hybrid architecture that combines digital oscillators with an analog filter, the ESQ-1 provides a broad sonic palette with extensive modulation capabilities. Its 61-key keyboard, built-in sequencer, and the ability to use custom waveforms made it a favored choice for musicians exploring a variety of musical styles.