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5 models

  • Waldorf Microwave

    Wavetable synthesizer module

    Synthesizer · Germany

    The Waldorf Microwave, released in 1989, is a wavetable synthesizer module that carried forward the technology of the PPG Wave. Its digital wavetable oscillators paired with analog filters produced distinctive evolving, metallic, and digital textures.

  • Yamaha TG77

    Audio equipment

    Synthesizer · Japan

    The Yamaha TG77 is the rackmount tone-module version of the SY77, offering Yamaha's combined FM and sample-based (AWM) synthesis for studio use with sequencers and controllers.

  • Yamaha TX81Z

    Multi-part FM tone-generator module

    Synthesizer · Japan

    A Yamaha FM tone-generator module containing the equivalent of eight four-operator FM synthesizers.

  • Roland JD-990

    Synthesizer model of the 1990s

    Synthesizer · Japan

    The Roland JD-990 is a rackmount digital synthesizer released in 1993 as a powerful tone module relative to the JD-800. It expanded the JD sound engine with more waveforms, advanced effects, and deep multitimbral capabilities for studio production.

  • 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.