The Roland Alpha Juno-1 is an analog polyphonic synthesizer released by Roland in 1985 and produced through 1987-88, originally priced around $895. It features 6-voice polyphony with one digitally controlled oscillator per voice (pulse, saw, square, and noise waveforms, plus a sub-oscillator), an analog 4-pole resonant low-pass filter, and a multistage envelope generator, all controlled via a 49-key, 4-octave keyboard with 64 RAM and 64 ROM tone colors and MIDI In/Out/Thru. Instead of traditional sliders, it uses membrane buttons and a single "Alpha Dial" for editing its extensive parameters (though the optional PG-300 programmer adds dedicated slider control), and it became especially well loved for its punchy bass sounds—perfect for acid basslines—along with noise effects and chord memory that made it a favorite in rave and techno production.