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This is the place for the Roland Alpha Juno synth series: Alpha Juno 1, Alpha Juno 2, HK-10, HK-80 and MKS-50.


All the Junos in this series have the same synth engine although they have differing features. The actual Juno 2 keyboard keys respond to velocity, the Juno 1 and HK-10 keyboards do not, although played through midi with a velocity keyboard it does work.

These synths can be programmed with the Roland PG-300 or software midi editors.

Please visit the file section for patches and software editors.

The filter can be controlled in a sequencer via MIDI aftertouch with the setting: VCF AFTR=15



      Sound engine:
    • 100% Analog 24dB Low pass Filter with Resonance
    • 3 stage High Pass Filter
    • Stable Multimode DCO (many waveforms)
    • Sub-oscillator
    • 6 Voice polyphony
    • 1 Voice multitimbral
    • Chord Memory (can be tricked for huge unison sounds)
    • 128 onboard sounds (64 preset, 64 user-programmable)
    • Pulse Width Modulation
    • LFO
    • The famous Roland Chorus
    • Two Unique invertible multi-stage ADSR envelopes. (VCF and DCA)

      MIDI Controllers
    • PG-300 Programmer available with sliders
    • Velocity Sensitivity
    • Aftertouch Sensitivity
      (all models respond to velocity and aftertouch, useful as a real-time midi controller)
    • Octave transpose (on keyboards)
    • polyphonic portamento (can slide chords around)
    • Alpha Juno-2 has a very hard to find cartridge that holds 64 additional sounds.
    • The Alpha Dial!! + Membrane buttons!!
    • Where the HOOVER sound got it’s start!!!

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