This keyboard is the most famous of the gabber
genres, with users from 808 State
to The Prodigy
. It features an analog tone generator
utilizing digital filtering
technology, which in the early eighties
when it was made available was a huge accomplishment.
The major difference between a Roland Alpha Juno-1 and an Alpha Juno-2 is the Alpha Juno-1's lack of aftertouch and velocity when outputting to an amplifier. They will both function equally when outputting using MIDI, however.
Also of note are pc programs which allow the entire memory banks of these synths to be transferred via MIDI, rather than recorded to cassette tape a la Juno-1 or cartridge.