JD-800 is a Roland’s digital synthesizer launched in 1991. The instrument provides 24 voices when one tone is used and reduces the polyphony to 6 notes when 4 tones are active (a patch can include up to 4 tones). The synthesis is based on proprietory...
Jupiter-4 is a synthesizer launched by Roland in 1978. The monotimbral instrument offers one VCO per voice. The oscillator generates triangle, square, and square with PWM, there’s a sub oscillator included. One LFO produces sine, square and ramp (ramp...