Organic Groove Machine and Speaker

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Introducing the DR-01S Rhythm Partner, the world’s first virtual percussionist designed specifically for acoustic musicians. Unlike the rhythm machines used by electronic musicians and DJs, the DR-01S is packed with organic percussion sounds and simple, versatile grooves that tastefully complement the unplugged experience. It’s an ideal companion for acoustic guitar and vocals, and just as powerful with ukulele, violin, piano, and other types of acoustic instruments.

The friendly interface on the DR-01S makes it easy to cater beats and variations to suit any style, while the onboard speaker provides high-quality sound that blends perfectly with acoustic instruments. And with battery-powered operation, you can take your rhythm partner everywhere you go. Whether playing solo or with friends, the inspiring DR-01S brings a new level of enjoyment to all your acoustic music sessions.


  • Great-sounding, easy-to-use rhythm box designed for acoustic musicians
  • Filled with simple, tasteful grooves to support and enhance unplugged music styles
  • Convenient all-in-one design with high-quality integrated sound system
  • User-friendly interface for selecting instrument types and grooves, adjusting volume and tempo, and more
  • Seven simultaneous instrument categories include everything from tambourines, shakers, and congas to full drum set, sound effects, standard metronome, and many other sounds
  • Dedicated patterns in each instrument category, with the ability to layer patterns from all categories together in real time
  • Save 50 favorite rhythm combinations for quick recall
  • Control various functions and trigger sounds hands-free with optional footswitches
  • Line out for connecting to an acoustic guitar amp or larger sound system
  • Aux input enables use as a speaker for a smartphone or other audio player
  • Powered by six AA-size batteries or included AC adapter
Power Output 7 W
Speaker 4" / 10 cm
Display 7 segments, 3 characters (LED)
DA Conversion 24-bit
Nominal Level Auxiliary Input: -20 dBu
Line Output: -10 dBu
Impedance Auxiliary-Input Impedance: 22 kOhms
Line-Output Impedance: 1 kOhm
Recommended Load Impedance: 10 kOhms or greater
I/O 1 x 3.5 mm Aux input, stereo
1 x 3.5 mm Line output, stereo
CTL 1, 2 Jack: 1/4" TRS input, phone type
Maximum Polyphony 24 voices
Tempo Quarter note = 40 to 300 bpm
Time Signatures 3/4, 4/4, 6/8
Tones Shaker, maracas, bell, whistle, tambourine, pandeiro, claves, cowbell, triangle, guiro, bongo, hand clap, paila, conga, cajon, drums, metronome, sound effects
Favorite Number: 50x
Power Supply 6 x AA batteries (alkaline, available separately), AC adapter (included)
Current Draw 330 mA
Expected Battery Life Approximately 10 hours under continuous use
Dimensions (W x D x H) 8.3 x 5.6 x 5.0" / 21.0 x 14.3 x 12.7 cm
Weight 2 lb / 900.0 g
Packaging Info
Package Weight 3.95 lb
Box Dimensions (LxWxH) 12.2 x 7.9 x 6.7"
More Information
Price $349.99
Vendor Item Number DR-01S
Special Order 1
Coming Qty 0
Manufacturer Roland
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