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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
Sound Engine: 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
References & Sources

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