Roland MKS-70 + PG-800 demo

Demo of Roland MKS-70/Super JX synthesizer and PG-800 programmer module, first manufactured in 1985. The MKS-70 is the rack-mount version of the JX-10. All the sound generation circuitry is analog, although it is digitally controlled, so the oscillator tuning is completely stable. It is similar in character to the Juno series (also digitally-controlled analog) but the voice architecture is more complex. Each “tone“ consists of 2 oscillators (1 with cross-mod), one LFO, two ADSR envelopes, a mixer, filte