Ensoniq, founded in the US in the mid-1980s, specialised in synthesizers, samplers, and digital audio equipment. In 1992, they released the DP/4, a four-channel digital effects processor offering high-quality reverb, delay, chorus, and flanger, with flexible multi-effects chains and an intuitive interface. The DP/4 became a favourite among engineers and producers across genres. ENSONIQ also introduced the DP/2, a two-channel version, and the DP/Pro, combining features of both. Though acquired by EMU Systems in the late 1990s, ENSONIQ’s innovative products remain highly regarded in the audio industry.