Roland U.S.

The World's Smallest Pro Studio

More Info

BR in Your Pocket or Guitar Case
The MICRO BR  is so small you can put it in your pocket! It measures just 136.0 mm x 81.0 mm x 21.4 mm (5-3/8" x 3-3/16" x 7/8"). But even though it’s tiny, the MICRO BR packs an entire studio’s worth of features into its tiny case. There are a dozen buttons on its front panel, nine knobs, and even a built-in microphone for quick capture.

Four Tracks & More
At its core, the MICRO BR is a four-track studio with four simultaneous playback tracks and two simultaneous record/input tracks.However, there’s more to this recorder than meets the eye. Each of the four main playback tracks also has eight companion V-Tracks (for a total of 32), so you can record take after take after take, then pick your best material for final mixdown.

Drum Machine & Effects Onboard
Given the MICRO BR’s small size and low price, you might be surprised to find the next two features onboard: (1) Almost 300 drum patterns are included. Use them for play-along inspiration or even as song foundations. The rhythms don’t consume any of the four playback tracks — they play back independently. (2) A quality multi-effects processor is onboard, including a time-stretch algorithm for changing the tempo of your audio tracks without changing pitch — a great tool for both audio editing and phrase training. The Time Stretch feature can also be used with MP3 data; the MICRO BR's Center Cancel feature can be applied to MP3 data as well.

MP3 Compatibility
The MICRO BR is capable of loading and playing MP3 files. Load up your favorite guitar hero song via USB, slow down the tempo with no pitch change, and learn all of your favorite licks. You can even use the MICRO BR as a standard MP3 player. All of your data is stored on convenient SD (Secure Digital) media found in common electronics shops. The included 128MB card, for example, can record approximately 65 minutes of audio when one mono track is selected.

The World's Smallest Pro Studio

Specs

Tracks

4, V-Track: 32 (8 V-Track per each Track), Up to 2 tracks can be recorded simultaneously, Up to 4 tracks can be played back simultaneously

External Memory Capacity

SD Card: 32 M-1G bytes

Data Type

HiFi (MT2), STANDARD (LV1), LONG (LV2),

Audio Data Type (MP3 Mode)

MP3 (192 kbps, 44.1 kHz), MP3 (128 kbps, 44.1 kHz), MP3 (64 kbps, 44.1 kHz), WAV (44.1 kHz, 16 bits) The MICRO BR can play the MP3 in bit rate range of 64--320 kbps.

Signal Processing

AD Conversion: 24 bits + AF method (GUITAR IN, onboard mic), 24 bits (LINE IN/MIC), DA Conversion: 24 bits
AF method (Adaptive Focus method) Adaptive Focus is a unique Roland/BOSS technology that allows the signal noise (S/N) ratios of AD and DA converters to be vastly improved.

Sample Rate

44.1 kHz

Frequency Response

20 Hz to 20 kHz

Recording Time (conversion in one track)

HiFi (MT2) STD (LV1) LONG (LV2)
32 MB 15 min. 18 min. 23 min.
64 MB 31 min. 38 min. 47 min.
128 MB 64 min. 76 min. 96 min.
256 MB 128 min. 154 min. 192 min.
512 MB 257 min. 309 min. 386 min.
1 GB 502 min. 604 min. 755 min.

The above-listed recording times are approximate. Times may be slightly shorter depending on the number of songs that were created.
The above number is the total for all the tracks that are used. If each of the four tracks contain an equal amount of data, the length of the resulting song will be approximately 1/4 of the above.
The memory capacity (recording time) decreases when the MP3 file etc. exist in the memory.

Recording Time (conversion in MP3 mode, Stereo)

MP3 WAV
64 kbps 128 kbps 192 kbps
32 MB 65 min 32 min 21 min 2 min
64 MB 131 min 65 min 43 min 5 min
128 MB 265 min 132 min 88 min 12 min
256 MB 531 min 265 min 177 min 24 min
512 MB 1065 min 532 min 355 min 48 min
1 GB 2081 min 1040 min 693 min 94 min

The above-listed recording times are approximate. Times may be slightly shorter depending on the number of MP3/WAV files that were created.
The memory capacity (recording time) decreases when the track data (Song) exist in the memory.

Nominal Input Level (Variable)

GUITAR / BASS jack: -20 dBu, LINE IN / MIC jack: LINE: -10 dBu (LINE), MIC: -40 dBu (EXT MIC)

Input Impedance

GUITAR / BASS jack: 1 M ohms, LINE IN / MIC jack: LINE: 16 k ohms, EXT MIC, Plug-in Power = OFF: 18 k ohms, EXT MIC, Plug-in Power = ON: 2.2 k ohms

Nominal Output Level

PHONES / LINE OUT jack: -10 dBu

Nominal Output Impedance

PHONES / LINE OUT jack: 33 ohms

Recommended Load Impedance

PHONES / LINE OUT jack: 16-100 ohms (PHONES), LINE: 1 k ohms or greater (LINE OUT)

Interface

USB Connector (mini B type)

Display

16 Characters x 2 Lines, 22 icons (White Backlit LCD)

Connectors

GUITAR / BASS jack (1/4 inch phone type), LINE IN / MIC jack (Stereo miniature phone type, supports Plug-in Power), PHONES / LINE OUT jack (Stereo miniature phone type), USB connector (mini B type)

Power Supply

DC 3 V: Dry battery LR6 (AA) type (alkaline) x 2, DC 9 V: Supply AC Adaptor (PSA series: sold separately)

Current Draw

140 mA (when you use the PSA series), 320 mA (when you use the dry batteries)

Expected battery life uner continuous use

Alkaline dry cell batteries Approximately 6 hours (with power save function) * The time may vary according to usage conditions, batteries used, and type of SD memory card used.

Accessories

Soft Case, Size AA alkaline dry cell battery x 2, Demo card (128 MB SD Memory Card:Already inserted when the MICRO BR is shipped), Owner's Manual, Leaflets (About Memory Cards, Information/Effect Patch List)

Option

AC Adaptor: PSA-Series

Confirmed operation memory cards

1GB

Panasonic

RP-SDQ01GJ1A, RP-SDR01GJ1A

Lexar

SD1GB-231

SanDisk

SDSDH-1024-903

HAGIWARA SYS-COM

HPC-SD1GT

512MB

Panasonic

RP-SD512BJ1A, RP-SDR512J1A

Lexar

SD512-231

SanDisk

SDSDH-512-903

HAGIWARA SYS-COM

HPC-SD512T

Size and Weight

Width

136 mm

5-3/8 inches

Depth

82 mm

3-1/4 inches

Height

22 mm

0-7/8 inches

Weight

0.1 kg

0 lbs. 5 oz.

Weight excluding SD memory card and batteries

* 0 dBu= 0.775 Vrms

*The specifications are subject to change without notice.

Insider

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Accessories

Downloads & Updates

Downloads & Updates

MICROtracks Volume 1

MICROtracks are free MP3 files for the MICRO BR designed to help you get better at soloing on guitar. Designed by BOSS guitar gurus Paul Hanson and Robert Marcello, each file comes with instructions and a chord chart. Load them into your MICRO BR and change the tempo or loop a section for the ultimate practice tool.

MICROtracks Volume 2

MICROtracks Volume 2 includes four additional tracks to help you get better at soloing on guitar. Designed by BOSS guitar gurus Paul Hanson and Robert Marcello, each file comes with instructions and a chord chart. Load them into your MICRO BR and change the tempo or loop a section for the ultimate practice tool.

Support

If you have questions about operating your Roland, BOSS or Edirol product, please check our Knowledge Base for answers to the most common questions.

You can also contact our Product Support department by phone or email.

In addition, we have a library of Product Manuals and Support Documents that you can download and reference. If Support Documents are available for this product, they will be listed below.

Support Documents

MICRO BR Q&A (PDF)

A collection of popular articles from the MICRO BR knowledge base.

MICRO BR TurboStart (PDF)

BOSS Product Catalog 2008 (PDF)

Forging the Future - Innovation for Creative Inspiration
BOSS forges into 2008 with an awe-inspiring lineup of effects, digital studios, and accessories.

Zero Magazine Article, 2006-11 (MICRO BR) (PDF)

Never pay for demo recordings again! The Micro BR Digital Recorder is the ultimate
DIY artists tool...

MICRO BR Brochure (PDF)

BR-Series Brochure (PDF)