A Fast and Easy Solution for Professional-Sounding Drums.
With the DR-3 Dr. Rhythm, guitarists and songwriters can add incredible-sounding drums to their music. This ultra-affordable drum machine includes some of BOSS’ best acoustic and electronic drum kits and a selection of bass sounds. Great for jamming, the DR-3’s Rhythm Progressions and multiple variations make it easy to create a realistic-sounding drum track for any style of music. And with Total Sound Control, you can tweak your kits to perfection.

Extended information

New Rhythm Progressions for All-Out Jams
If you want to spend less time programming and more time jamming, you’ll love the DR-3’s Rhythm Progressions. Simply choose from 100 Preset styles and use the eight panel buttons to switch between different sections of your song. Up to three variations can be selected for each Intro, Verse, Fill and Ending, so your drum tracks won’t get monotonous.
Easy Sound Shaping and Footswitch Control
BOSS' new TSC (Total Sound Control) lets you change the overall sound of a drum kit with specialized effects. Use the Sound Shape function to adjust the 3-band compression and 3-band parametric EQ, or add some spaciousness with the Ambience effect. An optional footswitch can be used to control anything from Intro/Start and Ending/Stop to Verse change, Variation On/Off, Loop On/Off and more. Battery power lets you take the DR-3 just about anywhere.

Technical specifications

Size and weight
Width 213 mm 8-7/16 inches
Depth 185 mm 7-5/16 inches
Height 53 mm 2-1/8 inches
Weight 0.71 kg 1 lbs. 10 oz.



Styles User Style: 100, Preset Style: 100 * 11 patterns for a style
Songs User: 100, Song Length: Max. 250 patterns for a song
TSC (Total Sound Control) <Sound Shape> Preset Patch: 8, User Patch: 8 <Ambience> Preset Patch: 8, User Patch: 8
Max. Polyphony 12-voice
Instrument Drum and perc: 120, Bass: 12
Resolution 96 per quater note
Tempo 20 to 260 bpm
Recording Method Realtime/Step
Pads 13 (Velocity-sensitive)
Display Backlit LCD (16 characters x 2 lines)
Connectors Output Jack: L, R (RCA Phono type), L(PHONES), R(MONO) (1/4-inch phone type), Foot Switch Jack (Stereo 1/4-inch phone type), MIDI IN Connector, DC IN (AC Adaptor Jack)
Power Supply DC9V: Dry Battery (R6/LR6 (AA) type) x 6, AC Adaptor (PSA-series)
Power Consumption 200 mA * Expected battery life under continuous use: <Alkaline> approx. 5 hours (This figure will vary depending on the actual conditions of use.)
Accessories Dry Battery (Alkaline LR6 (AA) type) x 6, Owner's Manual, Roland Service (Information Sheet)
Options AC Adaptor: PSA Series, Foot Switch: FS-5U, Foot Switch Cable: Roland PCS-31