the first synth compatible with the best-selling SR-JV80-Series expansion board.1991: JX-1While low priced, this playback keyboard had the ultimate selection of preset sounds, from acoustic instruments to analog synthesizers. It also had an edit function with eight parameters.1991: JD-800This digital synth employed a large number of sliders on the panel to allow real-time control of all parameters with an analog feel. Each Patch could consist of up to four Tones for creating fat sounds.1990: D-70This synthesizer used Advanced LA synthesis, which is an evolved form of LA synthesis. It had a built-in DLM function that could generate a variety of wave data for synthesizing. This innovation created an infinite range of sound creation possibilities.1989: U-220Employing the RS-PCM sound generator system, this upper model of the U-110 aimed at even higher sound quality. Preset tones were increased from 99 in the U-110 to 128 in U-220, and an onboard effects processor provides built-in chorus and reverb.1989: D-5The greatest feature of the D series was an onboard LA sound generator. With a chase function and arpeggiator at a price of 99,800 in Japan (roughly $725), this synthesizer offered outstanding cost performance.1989: U-20This keyboard used the RS-PCM sound generator, which retained compatibility with the U-110s tone data. It was distinguished by a unique system of operation, with sound patches that managed tone data, and keyboard patches that managed MIDI data.1988: U-110A simple-playback sound module with a DC-PCM sound generator. In addition to a wide range of built-in musical instrument tones, it could hold up to four memory cards at once. By combining these, users could create custom sounds.1988: D-20This model contained the same basic features of the D-10 but added a sequencer capable of 9-track multi-recording and a 3.5-inch floppy drive. The sequencer supported real time recording method.1988: D-110A stand-alone version of the D-10 sound generator, this sound module fit in a 1U rack. In addition to its main stereo output, it also had six individual outputs.1988: D-10Although this digital synthesizer was reasonably priced, it borrowed the D-50s LA sound generator, and also had multitimbral capability and rhythm machine functions. It had seven types of digital reverb, and the first built-in ROM player.1987: D-550This rack-mounted version of the D-50 synth also had an LA sound generator. Creating sounds was made simply by using a PG-1000 external controller that enabled manipulation of edit parameters in real time.1987: D-50Equipped with the Linear Arithmetic (LA) synthesis, this was Rolands first digital synthesizer. It also had a digital filter/effects processor. One of Rolands best-selling models, this synthesizer also excelled at analog-style sound.1986: MKS-50This rack-mounted model of the JUNO series made it possible to add portamento, detune, and other parameters to patches. It was equipped with chord memory, and could also use the PG-300.1986: MKS-70A rack version of the JX-10, this model could also use the same PG-800 sound programmer as the JX-10. Equipped with three different effects portamento, delay, and chorus it also had a memory cartridge slot.1986: JX-10This 76-key, DCO-type analog synthesizer incorporated 2 JX-8P sound generators. With 12-voice polyphony, this synth was nicknamed the Super JX. The