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DR-220A Dr. Rhythm Drum Machine - Image 1

DR-220A Dr. Rhythm Drum Machine

Drum MachineDigital

Back in 1986, this pocket-sized powerhouse brought realistic acoustic drum sounds to bedroom producers who needed beats on a budget, standing out in Boss's Dr. Rhythm lineup for its gritty 12-bit PCM samples that pack real punch despite the era's tech limits.

Super compact at just 239 x 75 x 31 mm and 350g, it slips easily into a gig bag and runs on four AA batteries or AC adapter, with a front-panel volume slider integrated right into the case design. You'll find 11 acoustic voices like punchy kicks, crisp snares, and toms, played via a 4x3 grid of non-velocity-sensitive pads next to a simple LCD that shows one step at a time—up to 16 steps in 4/4 or 12 in 3/4 mode. Program 32 user patterns via step entry or real-time tap recording, tweak accent and volume (0-5) per voice, chain them into eight songs up to 128 bars each (or 256 via song chain), and dial tempo from 40-250 bpm. Rear panel keeps it straightforward: 1/4" mono out, 1/8" headphone jack, and trigger I/O for 5V pulse sync with other gear—no MIDI, but dead simple for the time.

Folks digging vintage gear love its raw, hissy character that's perfect for lo-fi tracks or sampling, though some note the channel-sharing quirks mean not all sounds hit together, like limiting to one tom per beat. It's a no-frills survivor that still inspires jams today.

Released

1986

Status

Discontinued

Synthesizer
Format
Drum Machine, Micro
Type
PCM, Sample-based
Internal Battery
Yes
Voice
A/D
Digital
Polyphony
-
Oscillators
0
Oscillator Type
-
Voices
11
Filter
No
Envelopes
-
LFO
-
Effects
No
Expression
Aftertouch
No
Velocity
No
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
1x 1/4" mono
Headphone
1x 1/8" mono
MIDI
-
MIDI Type
-
Ports
Trigger In, Trigger Out
Wi-Fi
-
Workflow
Arpeggiator
No
Sequencer
Yes
Mod Matrix
No
Memory
Yes
Measurements
Dimensions
239 x 75 x 31 mm
Weight
350g
Last updated Feb 25, 2026