BOSS DR-110 Dr. Rhythm Graphic

BOSS DR-110 Dr. Rhythm Graphic Image

In 1980, Roland introduced their first simple and affordable drum machine to bear the BOSS Dr. Rhythm brand (the DR-55), offering four sounds, an Accent and a limited number of programmable patterns. It was followed by the Dr. Rhythm Graphic (DR-110) in 1983, which offers a wider selection of sounds, preset patterns, an increased number of programmable patterns and the ability to chain patterns together to form songs. The simple step programming of the first Dr. Rhythm, with alternating button presses for notes and rests, is augmented by an LCD with a grid showing the individual notes in the current pattern. In addition to step programming there is also a "tap write" programming mode, albeit without a metronome click for timekeeping.

The sounds are Kick, Snare, Closed Hi-Hat, Open Hi-Hat, Cymbal and Clap. The sounds are totally analog, and sound crisp and punchy, thanks to tone generation circuitry that is more sophisticated than the Roland TR-606 Drumatix. A balance knob alters the level of the Kick, Snare and Clap relative to the other sounds, while an accent knob controls the amount of emphasis applied to accented steps. There is also a volume knob, which controls the overall level of both the main and headphone outputs. The main output is mono, but has an unusual feature whereby plugging in a suitable wired lead with a stereo jack plug allows for the feeding in of another signal to be mixed with the drum sounds. Another socket provides for a trigger signal, emitting a pulse for every accented step in a pattern.

The patterns are organized into four banks of eight patterns each. Banks C and D are the presets, while banks A and B are programmable. Each pattern can be switched between 12 or 16 steps, for a 3/4 or 4/4 time signature. Two songs can be programmed, each containing a maximum of 128 bars.

At the time of writing, the Dr. Rhythm Graphic is relatively affordable compared to similar machines such as the Roland TR-606 Drumatix, and are usually found in good condition thanks to the padded carry case that they came with. On the downside, there are no outputs or tone controls for the individual sounds, but a number of well documented modifications can be found on the Internet that add these features.

Lookup BOSS DR-110 Dr. Rhythm Graphic Prices

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19 Visitor comments
June 7, 2013 @ 4:28 am
Just hooked up with dinsync mod kit by I almost screwed up the baby cuz i was too excited & the flat cable was really cheap made. I had to take a rest & cool down for days & got back to complete the task. Its very compact analog beast, but if its fuked, i wouldnt feel like paying for another one on eBay cuz the current price is steight up ripped off.
May 20, 2013 @ 4:42 am
I had a DR 110 back in the day. (mid 80's) I used to take it to school (high school) with me & play w/it on the bus & often in class as well. =D It was a cool/fun little drum machine, but w/o MIDI & a limited number of (then outdated) sounds, I sold it cheap, back in the early 90's, along with my Korg M1. (& then bought a Korg M1Rex) Had I know they would have increased in value ($250 on Ebay now), I would have held onto it.
May 16, 2013 @ 3:34 pm
I love mine!! It's so fun and easy to create some quick beats!
November 23, 2012 @ 10:03 am
great drum machine i love this thing i got samples of it and i rock it out so hard for hip hop it's just got that like old school vibe for electronic rock it's got that radiohead meets nine inch nails vibes love this thing till i die thank you boss awesome company represent!
edmund conway
November 17, 2012 @ 12:08 pm
I would like to purchase a Rythm Box
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VSE Rating

It’s Good

User Rating

Rated 3.69 (131 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 6 voices
  • Waveforms - 6 sounds: Bass drum, Snare drum, Open HiHat, Closed HiHat, cymbal, Clap
  • Effects - Accent
  • Patterns - 32 patterns (4 banks of 8 patterns each)
  • Songs - 2 songs (up to 128 bars each)
  • Keyboard - 7 Drum Pads
  • Memory - 16 preset patterns, 16 user patterns
  • Control - Trigger out
  • Date Produced - 1983
  • Resources & Credits
  • Original image from Perfect Circuit Audio

    Review by Chris Wareham

    Reviewed January 2012

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