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2 models

  • Oberheim Xpander

    Six-voice analog synthesizer module with matrix modulation

    Synthesizer · United States

    The Oberheim Xpander, introduced in 1984, is a six-voice rack-format analog synthesizer module and the architectural sibling of the Matrix-12. Each voice offers two oscillators, fifteen filter modes, five LFOs, five DADSR envelopes, ramp and tracking generators, and a flexible modulation matrix, making it a benchmark of analog synthesis flexibility in a keyboardless module.

  • E-mu Proteus/1

    Rackmount sample-based sound module

    Synthesizer module · United States

    The E-mu Proteus/1, introduced in 1989, is a 1U rackmount sound module that played back 16-bit ROM samples across 32-voice polyphony and 16-part multitimbrality. It drew on sounds derived from E-mu's EIII sampler library and became a widely used professional sound module for orchestral and pop production in the early 1990s.