Roland Alpha Juno 2

The Roland Alpha Juno 2 is an analog polyphonic synthesizer manufactured in 1986. It features one Alpha Dial that controls multiple parameters, as well as MIDI In, Out, and Thru functionality. It is well know for its use of digitally controlled oscillators in conjunction with analog filters. The Alpha Juno 2 added an extended velocity-sensitive 61-key keyboard and a slot for an external memory card.

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  • Alpha Juno 2

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Keyboard 61 velocity keys with aftertouch
Functions LCD display, 39 buttons and a jog wheel. On the left side a joystick that acts as both pitch bender and modulation functions
Voice Main CPU Intel 8032AH manages 6 voices polyphony
Playmode functions Octave transpose keyboard
portamento glide
chord mode learn (it outputs Midi)
bender range 1 octave setting
key transpose
15 aftertouch levels assignable to VCF / DCO / VCA
Filter Multimode VCF based on 6 IC X IR3R05 (also VCA)
lowpass at -24dB/Oct /resonance (it does not auto-oscillate)
highpass- only 4 preset values. VCF system provides keytracking system scaled to 15 values
Memory 64 ROM presets
64 RAM slots + 64 others if optional cartridge m64c is fitted. Sounds can be saved to magnetic tape or Midi exclusives data dump.
MIDI Some basic CC# are managed including- modulation, foot control, portamento time and hold
Effect Section features an analog stereo chorus based on 2 X MN3101 + 2X MN3009 IC like Juno-60 or Jx-3p with adjustable rate
Connectors Midi interface
tape interface
main out
headphones out
expression pedal (assignable)

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