Boss DR-01S Rhythm Partner



Boss DR-01S Rhythm Partner


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



Maximum Polyphony: 24 voices
Tempo: Quarter note = 40--300
Time Signature: 3/4, 4/4, 6/8

- Shaker
- Maracas
- Bell
- Whistle
- Tambourine
- Pandeiro
- Claves
- Cowbell
- Triangle
- Guiro
- Bongo
- Hand clap
- Paila
- Conga
- Cajon
- Drums
- Metronome
- Sound effects

Number of Favorite: 50
Rated Power Output: 7 W
Speaker: 10 cm (4 inches)
Display: 7 segments, 3 characters (LED)
DA Conversion: 24 bits
Nominal Input Level: AUX IN: -20 dBu
Input Impedance: AUX IN: 22 k ohms
Nominal Output Level: LINE OUT: -10 dBu
Output Impedance: LINE OUT: 1 k ohm
Recommended Load Impedance: LINE OUT: 10 k ohms or greater

- AUX IN jack: Stereo miniature phone type
- LINE OUT jack: Stereo miniature phone type
- CTL 1, 2 jack: 1/4-inch TRS phone type
- DC IN jack

Power Supply
- Alkaline battery (AA, LR6) x 6 (sold separately)
- AC adaptor

Current Draw: 330 mA

Expected battery life under continuous use: Alkaline: Approx. 10 hours
*These figures will vary depending on the actual conditions of use.

- Owner's manual
- AC adaptor (PSB-1U + AC Cord Set)

Options (sold separately)
- Footswitch: FS-5U
- Dual Footswitch: FS-6, FS-7
- AC adaptor (PSB-1U)

*When purchasing an AC adaptor, be sure to specify the adaptor (from the list that follows) that is designed for the region in which it will be used, and the voltage supplied there.


- 210 mm
- 8-5/16 inches
- 143 mm
- 5-11/16 inches
- 127 mm
- 5 inches
- 900 g
- 2 lbs

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