Rhythm Composer

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The Roland Boutique TR-08 Rhythm Composer is an ultra-compact recreation of the original TR-808 drum machine. The unit features the same front-panel layout and user interface as the original and is powered by Roland's Analog Circuit Behavior (ACB) technology, which delivers the same huge, speaker-pummeling output, but in a more affordable and portable format. The TR-08 offers precise control over an array of drum parameters and includes the ability to keep playing when switching modes, something the original was unable to do. The TR-08 features ten separate outputs via USB, external instrument control via the on-board trigger output, and USB MIDI. The unit can be powered by USB or via the included four AA batteries, and it ships with a black DK-01 Boutique dock.


  • Ultra-compact recreation of the TR-808 drum machine
  • Retains the sound, character, and user interface of the original TR-808
  • Hands-on control including tone, level, tuning, and decay
  • Added compressor, gain, tune, and pan for selected instruments
  • Programmable via classic Step- and Tap-write modes
  • Sequencer has 16 steps with 16 sub-steps for detailed patterns and rolls
  • Continue playing beats, even while switching between write modes
  • LED display for easier navigation and fine control of tempo and shuffle
  • Ten separate outputs via USB audio
  • Dedicated, track-selectable trigger output for controlling external instruments
  • High-quality construction with metal front panel
  • Highly portable for mobile music-making
  • Includes DK-01 Boutique Dock for multiple-angle viewing
  • Battery operated (4 x AA) or USB powered
  • Built-in, powered mini-speaker for instant enjoyment
  • Compatible with optional Roland Boutique accessories
Memory User memory
Pattern, Intro/Fill-In: 16 banks (12x16 Pattern, 4x16 Intro/Fill-In)
Steps 16 steps with 16 sub-steps
Instruments Bass Drum
Snare Drum
Low Conga / Low Tom
Mid Conga / Mid Tom
Hi Conga / Hi Tom
Claves / Rim Shot
Maracas / Clap
Cow Bell
Open Hi Hat
Closed Hi Hat
Controllers Volume knob
Start/Stop button
Tempo knob
Bank/Tempo/Shuffle button
Fine/Value knob
Mode selector knob (Pattern Clear, Pattern Write 1st Part/2nd Part, Manual Play, Rhythm Track Play, Compose)
Instrument/Track selector knob
Clear button
Basic Variation selector switch and indicator
Auto Fill In selector knob
Trigger Out track select button
Accent Level knob
Instrument Level knob (all instruments)
Tone control knob (BD, SD, CY)
Decay control knob (BD, CY, OH)
Snappy control knob (SD)
Tuning control knob (LC/LT, MC/MT, HC/HT)
Voice selector switch (LC/LT, MC/MT, HC/HT, CL/RS, MA/CP)
Pre-Scale selector switch
Step button (1-16) and indicator
I/F Variation switch
Tap button
Menu/Sub Step button
1st Part/2nd Part indicator
Power switch
Effects Compressor
Indicators 7 segments, 4 characters (LED)
Connectors Trigger Out: 1/8" / 3.5 mm mono 
Phones: 1/8" / 3.5 mm stereo 
Output: 1/8" / 3.5 mm stereo 
Mix In: 1/8" / 3.5 mm stereo 
MIDI In/Out: 2 x 5-pin DIN
USB Port: Micro-USB (Type-B, audio/MIDI)
Power Supply 4 x rechargeable NiMH batteries (AA, HR6)
4 x alkaline batteries (AA, LR6)
USB bus power
Current Draw 500 mA (USB bus power)
Battery Life (approx.) Rechargeable NiMH Battery: Approx. 6 hours
Dimensions (W x D x H) 12.1 x 5.1 x 2.0" / 30.8 x 13.0 x 5.1 cm
Weight 2.9 lb / 1.3 kg
Packaging Info
Package Weight 4.1 lb
Box Dimensions (LxWxH) 13.9 x 7.1 x 3.5"
More Information
Price $549.99
Vendor Item Number 761294511466
Special Order 0
Coming Qty 0
Manufacturer Roland
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