Roland D-50
| Spec | Detail |
|---|---|
| Manufacturer | Roland |
| Year released | 1987 |
| Synthesis type | Linear Arithmetic (LA) |
| Architecture | Digital |
| Polyphony | 16-voice polyphonic |
| Notable users | Enya, Jean-Michel Jarre, Prince |
| Known for | The LA synth that layered short samples with analog-style oscillators |
Overview
The Roland D-50 is a digital synthesizer released in 1987. It is a 16-voice polyphonic instrument that introduced Roland's Linear Arithmetic (LA) synthesis, a method that combines short digital samples with analog-style oscillators. Unlike purely sample-based or purely analog synths, the D-50 offered a hybrid approach that many players found expressive and immediately usable. Its factory presets, such as 'Fantasia' and 'Soundtrack', became staples in pop, film, and electronic music of the late 1980s and early 1990s. The D-50 also included built-in digital effects like reverb and chorus, which added polish to its sound. Because it was digital, it stayed in tune and could store sounds without the maintenance of analog gear. Its keyboard is 61 keys, velocity-sensitive but not aftertouch-sensitive. The D-50 was not a workstation in the modern sense; it had no sequencer or sampler, but its sound design capabilities made it a go-to instrument for producers seeking a modern, lush tone. Its impact was significant enough that Roland later released the D-50 as a software plugin and included its sounds in other products.
History & design
Roland introduced the D-50 in 1987 as a response to the growing demand for digital synthesizers that could produce realistic and evocative sounds. Competing instruments like the Yamaha DX7 used FM synthesis, while samplers such as the Akai S900 offered realistic but expensive and cumbersome sample playback. Roland's engineers developed Linear Arithmetic synthesis to provide a middle ground: the warmth of analog-style waveforms combined with the attack and character of short digital samples. The D-50 was designed to be user-friendly, with a clear interface and a large library of presets. It was not intended as a flagship workstation but as a performance and composition tool for musicians who wanted new textures. Its success led to the D-550 rack version and later the D-10 and D-20, which used a simplified version of LA synthesis. The D-50 remained in production until the early 1990s. Its design influenced Roland's later synthesizers, including the JD-800 and JV series, which expanded on the sample-plus-synthesis concept.
How it works
Linear Arithmetic synthesis combines two types of digital sound sources: sampled attacks and synthesized tones. Each voice can use up to four partials, which are grouped into two pairs. One pair typically consists of a short PCM sample, often a percussive attack like a piano or bell, while the other pair uses a synthesized waveform, such as a sawtooth or square wave, generated digitally. The two pairs are mixed and shaped by a time-variant filter and amplifier. This layering allows the D-50 to create sounds that have a realistic attack followed by a sustaining tone that can evolve. The samples are short, usually less than a second, so they do not loop; the synthesized part carries the sustain. The filter is a digital low-pass type with resonance, and it can be modulated by envelopes and LFOs. The D-50 also includes a digital effects processor with reverb, chorus, and EQ, which can be applied per patch. The architecture is not truly analog; the 'analog-style' oscillators are digital recreations. However, the combination of sampled and synthesized elements gives the D-50 a distinctive character that is neither purely sample-based nor purely subtractive.
Signature sound
The D-50 is known for its lush, crystalline pads, metallic bells, and atmospheric textures. Its presets often feature a bright, digital sheen combined with a warm, analog-like sustain. The use of short samples for attacks gives sounds an immediate presence, while the synthesized portion provides a smooth tail. This made the D-50 ideal for pop ballads, film scores, and new age music. Its built-in reverb and chorus effects add depth, and many classic D-50 sounds rely heavily on these effects. The instrument can also produce aggressive brass and string sounds, though it is most celebrated for its ethereal qualities. Unlike samplers, the D-50's samples are fixed and cannot be replaced, so its palette is distinct and recognizable. The 'Fantasia' preset, with its bell-like attack and shimmering sustain, became a signature sound of the late 1980s. The D-50's output is purely digital, but its design intentionally mimics the warmth of analog synths, resulting in a hybrid tone that many musicians find emotionally resonant.
Notable users & recordings
The Roland D-50 was used by a wide range of artists across genres. Enya employed it extensively on her album Watermark (1988), where its pads and bell tones contributed to her layered, ethereal sound. Jean-Michel Jarre used the D-50 on his album Revolutions (1988) and in subsequent live performances, integrating its digital textures into his electronic compositions. Prince used the D-50 in his late-1980s work, including the album Batman (1989), where its sounds added a modern edge to his funk and pop arrangements. Other users include Sting, who used it on ...Nothing Like the Sun (1987), and film composers like Hans Zimmer, who incorporated it into scores such as Rain Man (1988). The D-50 also appeared in numerous pop and rock productions of the era, often for its distinctive pads and leads. Its sounds can be heard on countless records from the late 1980s and early 1990s, making it one of the most recognizable digital synthesizers of its time.
Legacy & influence
The D-50 helped establish the concept of combining samples with synthesis, a approach that became common in later digital synthesizers. Its success demonstrated that musicians wanted instruments that could produce both realistic and synthetic tones without the complexity of a full sampler. Roland continued to develop LA synthesis in models like the D-10, D-20, and D-70, and the D-50's influence can be seen in the JD-800, which offered more hands-on control, and the JV series, which expanded the sample-plus-synthesis idea. The D-50 also paved the way for software synthesizers; Roland released a software version in 2017 as part of its Roland Cloud service. Its presets remain popular in retro and synthwave music, and its sound is often emulated in modern plugins. Although digital synthesis has advanced significantly, the D-50's unique blend of attack samples and synthesized sustain continues to be admired for its musicality. It is remembered as a landmark instrument that defined the sound of late-1980s pop and electronic music.
Frequently asked questions
Q: Is the D-50 an analog synthesizer? A: No, it is fully digital. Its oscillators are digital recreations of analog waveforms, and it uses digital samples for attacks. The term 'analog-style' refers to the character of its synthesized waveforms, not to analog circuitry. Q: Can the D-50 load new samples? A: No, the D-50's samples are fixed in ROM and cannot be replaced or expanded. However, you can create new sounds by combining its built-in samples and synthesized waveforms in different ways. Q: How many voices does the D-50 have? A: It is 16-voice polyphonic, meaning it can play up to 16 notes simultaneously. However, using complex patches with multiple partials can reduce the effective polyphony. Q: Does the D-50 have a sequencer? A: No, it does not include a sequencer or arpeggiator. It is a synthesizer, not a workstation, though it can be controlled by external MIDI devices.