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Korg Rhythm 55B KR-55B

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The Korg Rhythm 55B aka the KR-55B is an analog drum machine released in 1982. It's an updated version of the popular KR-55 released prior. The KR-55B has 96 preset patterns; 32 Intro patterns, 32 Fill-In patterns. More than double everything from the previous model. The KR-55B has the same overall features as the KR-55 including the assortment of knobs and buttons for adjusting volume of the drum sounds, rhythms and type of beat.

The connections of the unit feature a select switch on back for quantizing beats, a trigger out, and two audio outs for high and low connectivity for difference setups.

The unit is non programmable but the tempo could be controlled and there are volume sliders for mixing the sounds as well a shuffle function . The sound of the hi-hats are said to be similar to the Roland TR-808 and more complex.


Type: Analog
Sound Engine: Subtractive
Pattern Engine
Programming: Presets
Pattern Notes:
+ 96 preset patterns
+ 32 Intro patterns
+ 32 Fill-In patterns
Sounds Per Pad
Sounds Per Pad: 1
Sources: Synthesizer
Polyphony & Tuning
Polyphony: 12
Timbrality: 12
Tuning: Standard
Modes: Polyphonic
Patterns User: 1
Patterns Preset: 96
Case: Desktop
Controls: Buttons, Knobs, Start / Stop Pedal
Dimensions (WxDxH): 296 x 61.5 x 258 mm
Weight: 27 kg
MIDI / Sync / Trigger
Audio Outputs: 1/4" Phone Jack, Mono Out
Audio Output Count: 2
CV Ports: Trigger Out
Power: 6 w
Used: $149.46-$675
Released: 1982
Manuals & Documents
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References & Sources

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