The Quasimidi Cyber-6 is a synthesizer released by Quasimidi in 1999. It is a 6-voice polyphonic synthesizer with a 61-note keyboard and a range of features, including a built-in sequencer, arpeggiator, and effects. The Cyber-6 is capable of producing a wide range of sounds, from classic analog-style bass and lead sounds to complex digital textures.