Boss

DR-550 MKII DR-Rhythm

Drum Machine

Main Details
Maker Boss Brand
Function
Channels/Tracks
  • 91 × Voice (Internal Sounds)
  • 12 × Voice (Voice Polyphony)
  • 64 × Track (Programmable Patterns)
  • 64 × Track (Preset Patterns)
Form Factor Desktop
Signal Path Digital Hardware (including Analog Connections)
Date Produced 1992
Weight 510 g
Power Source DC 9v (1.5V x 6 AA Batteries)
Displays/Indicators
Type: LCD Display
Connections
Phones
Connector: 3.5mm Miniature Phone Jack (1/8")
Stereo Line-Out
Connector: 1/4" Phone Jack (6.35mm)
Tape Save/Load
Connector: 3.5mm Miniature Phone Jack (1/8")
MIDI In
Connector: DIN

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