I just learned about an #opensource #linuxaudio #juno #synth emulation #plugin called Ultra Master KR-106:
https://kayrock.org/kr106/

“A quarter century in the making […] DSP calibrated from hardware measurements, firmware analysis, and factory schematics […] 6-voice polyphonic […] original patches decoded from factory SYSEX […] per-voice component tolerances model […] Our goal is to make this as accurate as humanly possible, and we would love for you to help us get there.”