The Roland JD-990 Super JD is an updated version of the Roland JD-800 synthesizer in the form of a module with expanded capabilities, which was released in 1993 by Roland Corporation. JD-990 is a multitimbral synthesizer utilising PCM sample-based synthesis technology.[1] In a sense it is not a true module version of a JD-800 as it has many expanded features and as a result the two are incompatible in exchanging presets. It is equipped with 6 MB of ROM containing sampled PCM waveforms, four sets of stereo outputs that are assignable to individual, internal, instruments, and standard MIDI in/out/through ports. JD-990 has a large LCD display[2] and programming takes place through a keypad on the front panel of the unit. The unit can generate multi-timbral sounds reminiscent of the vintage analogue synthesizers but is also capable of generation of modern digital textures. There are several expansion boards available for JD-990 that can be installed in the provided expansion slot in the chassis of the unit.[3]
The JD-990 had the following[4] features which were not available on the JD-800:
The JD-990 is compatible with the following:
The Factory presets of the JD-990 were created by Eric Persing and Adrian Scott.
The JD-990 has been used by artists such as Klaus Schulze,[5] Paul Shaffer,[6][7][8] Steve Duda,[9] Vangelis, The Prodigy, Apollo 440, ATB, and Mirwais.[3] Apollo 440 used the JD-990 for atmospheric sounds on the track "The Machine in the Ghost", on the album Gettin' High on Your Own Supply.[10] On the Faithless song "Insomnia", the pizzicato hook is from a JD-990, with added reverb.[11]
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