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!!!