Eska 632.313 is part of the Eska series of sound synthetizers, developed by Japanese company, Eska Synthesizers. It was first released in 1990, offering 16 note polyphony. It features 8 voices and 8 effects, including effects such as delays, reverbs, choruses and flange. The instrument also includes a powerful 16-step sequencer, MIDI control, and advanced clock generator allowing for complex rhythms. The instrument's sound engine is based on the TX81Z module, which allows for detailed sound sculpting, offering a wide range of sound possibilities. The 632.313 has become a classic, offering analog and digital synthesis through one instrument.