Roland Rhythm 77 TR-77

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    The Roland Rhythm 77 (TR-77) drum machine was Roland's first product and was released in 1972. It is actually an updated version of the Rhythm Ace FR-8L produced by Ace Electronics and was one of a trio of drum machines released by Roland that year, but offering features superior to those of Rhythm 33 (TR-33) and Rhythm 55 (TR-55). It comes in a flat wooden case with a metal base, and in keeping with its intended market amongst organists it has a folding music stand on top.

    Type: Analog
    Synthesis: Subtractive
    Pattern Engine
    Programming: Presets
    Sounds Per Pad
    Sounds Per Pad: 13
    Sources: Synthesizer
    Polyphony & Tuning
    Polyphony: 13
    Timbrality: 13
    Tuning: Standard
    Modes: Polyphonic
    Patterns User: 1
    Patterns Preset: 32
    Case: Desktop
    Rack Size: 19"
    Controls: Buttons, Knobs, Sliders, Switches
    Dimensions (WxDxH): 640 x 310 x 95 mm
    Weight: 7.5 kg
    MIDI / Sync / Trigger
    Audio Outputs: 1/4" Phone Jack, Mono Out
    Audio Output Count: 2
    Power: 4.9 va
    Used: $364-$686
    Released: 1972
    Manuals & Documents

    YouTube Videos
    References & Sources

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