Boss ME-25

Guitar Multiple Effects Processor w/ COSM, Super Stack, Phrase Loop & SONAR 8.5 LE DAW

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The BOSS ME-25: Featuring Outstanding FX and Stompbox Ease

The pleasantly affordable new ME-25 is packed with legendary BOSS features that'll make you sound like a pro in no time. It’s just as fun and easy to use as a regular stompbox, and with the built-in SOUND LIBRARY, you gain access to loads of classic and modern effects that will surely help you find your unique sound. Just choose a category, select a variation and play. Customize your sound 'til your heart's content by tweaking the Drive, Volume and Tone knobs. With COSM (Composite Object Sound Modeling) amp models built-in, along with the Super Stack and Phrase Loop features, the BOSS ME-25 is an absolute dream for upstart and expert guitarists alike who want great sound with great ease.

Easy Access
The stylish black and white design of the ME-25 makes each button, knob and pedal stand out so they're all easy to see and access. Three footswitches, an Expression pedal, four knobs, nine backlit buttons and an enlarged LED panel offer a clean control panel that’s perfect for just about any environment — especially on low-lit stages.

COSM Amplifier Modeling
Its price tag might make you think “entry level,” but the ME-25 is nothing but top notch. Fantastic COSM amp models from the deluxe ME-70 model cover a broad stylistic spectrum, from classic to contemporary. The new ULTRA METAL boasts screeching hi-gain distortion for lots of different flavors of metal music. Also in the collection is SUPER STACK. With a simple push of a button, SUPER STACK will make a little practice amp sound like a beastly stack.

User-customizable SOUND LIBRARY
Tons of presets come included with the ME-25’s onboard SOUND LIBRARY, all easily selectable by category, but you can also customize the sounds with the dedicated front-panel knobs. Free downloadable Librarian software additionally allows you to edit and save your sounds onscreen.

USB Connectivity
Hook the ME-25 up to a PC with a USB cable and you've got yourself a personal recording studio at your fingertips. The ME-25 can serve as a USB audio interface, which makes a convenient, complete studio setup with the bundled Cakewalk SONAR 8.5 LE DAW (Digital Audio Workstation) software (Windows Only). Through this setup, you can stream audio between the ME-25 and PC directly through the USB connection.

Boss By Roland Authorized Reseller

Product Features:

  • Guitar Multiple Effects Processor
  • Impressive COSM® amplifer models, from classic to contemporary
  • User-friendly interface
  • SOUND LIBRARY offers an extensive collection of unique tones, which can be expanded with extra tones
  • Sounds can be easily tweaked with the Drive, Tone, and Level knobs and Expression pedal
  • SUPER STACK adds heavy low-end and punch to make smaller amps sound bigger
  • Phrase Loop features 38 seconds of recording time
  • Can be used as a USB audio interface
  • AUX input available for jamming along with external music devices (MP3/CD players, etc.)
  • Powered by 6 AA batteries or AC adapter
  • Includes Cakewalk SONAR 8.5 LE DAW software
  • Free downloadable Librarian software
  • Also found as: ME25, ME2-5, M-E25
  • Optional Accessories:
  • Authorized Internet Dealer
  • 1-year Parts, 90-days Labor Manufacturer's warranty

What's In The Box?

  1. (1) Owner's Manual (see Product Summary below for PDF)
  2. (1) Dry Battery (LR6 (AA) type Alkaline) x 6
  3. (1) Sound Library/Memory List (Leaflet)
  4. (1) Sound Library Sticker
  5. (1) Roland Service (Information Sheet)
  6. (1) ME-25 DVD-ROM:
    • SONAR 8.5 LE (Windows Only)
    • ME-25 USB driver for Windows® 7 (32- & 64-bit)
      Windows Vista® (32- & 64-bit)
      Windows® XP (32-bit)
      *ME-25 USB driver for Macintosh is downloadable from BOSS websites.
    • Audio Files

ME-25 Specifications:

  • AD Conversion: 24-bit + AF method*
  • *AF Method (Adaptive Focus method) - This is a proprietary method from
    Roland & BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.
  • DA Conversion: 24-bit
  • Sampling Frequency: 44.1 kHz
  • Memory: 60
  • Sound Library: 60
  • Sound Library Category:
    • CLEAN
    • CRUNCH
    • DRIVE
    • HEAVY
    • LEAD
  • Effect Type:
    • COMP/FX (Compressor/Effect):
      • COMP
      • T.WAH
      • AC SIM
    • OD/DS (Overdrive/Distortion):
      • BOOST
      • OD-1
      • T-SCREAM
      • BLUES
      • DIST
      • CLASSIC
      • MODERN
      • METAL
      • CORE
      • FUZZ
    • PREAMP:
      • CLEAN
      • TWIN
      • TWEED
      • VO DRIVE
      • BG LEAD
      • MS VINTAGE
      • MS MODERN
      • 5150 DRIVE
      • R-FIER
      • CHORUS
      • PHASER
      • FLANGER
      • ROTARY
      • UNI-V
      • TREMOLO
      • OCTAVE
    • DELAY:
      • 1-99 ms
      • 100-990ms
      • 1000-6000ms
      • TAP
    • REVERB:
      • ROOM
      • HALL
    • PEDAL FX (Pedal Effect):
      • WAH
      • +1 OCTAVE
      • -1 OCTAVE
      • FREEZE
      • NS (Noise Suppressor)
  • Nominal Input Level:
    • INPUT: -10 dBu
    • AUX IN: -18 dBu
  • Input Impedance:
    • INPUT: 1M ohm
    • AUX IN: 22k ohms
  • Nominal Output Level: -10 dBu
  • Output Impedance: 2k ohms
  • Display: 7 segments, 2 digits LED
  • Power Supply: DC 9V, Dry Batteries (R6/LR6 (AA) type) x 6 or AC Adapter (Boss By Roland PSA-120S sold separately)
  • Current Draw: 150 mA
  • Duration of continuous use with battery operation:
    • Alkaline: 9 hours
    • Carbon: 3 hours

    • *These figures will vary depending on the actual conditions of use.
  • Weight: 4 lbs. 4 oz. (1.9 kg)
  • Dimensions: 11-13/16" (300 mm) W x 7-9/16" (191 mm) D x 2-7/8" (72 mm) H

System Requirements:

  • Windows:
    • OS:
      • Microsoft® Windows® XP Professional
      • Microsoft® Windows® XP Home Edition
      • Microsoft® Windows® Vista
      • Microsoft® Windows® 7
      • * Librarian does not support Windows® XP Media Center Edition
    • CPU/Clock: Intel® Core™/Pentium® 1.5 GHz or higher
    • Memory (RAM): 512 MB or more
    • Hard Disk: 150 MB or more
    • Display/Colors: 1024 x 768 or higher/Full Color 24-bit or more
    • Others: A computer with a USB connector that supports USB Specification Revision 1.0 or higher

  • Macintosh:
    • OS: Mac OS 10.4.3 or later
    • CPU/Clock: Intel Processor or PowerPC G5
    • Memory (RAM): 512 MB or more
    • * 1 GB or more when using Mac OS X 10.5 or later
    • Hard Disk: 150 MB or more
    • Display/Colors: 1024 x 768 dots or higher/16.7 Million colors or more
    • Others: Apple Macintosh series with a USB connector that supports USB 1.0 or higher

SONAR 8.5 LE Specifications:

  • 32 audio tracks
  • 64 MIDI tracks
  • 8 simultaneous inputs and outputs
  • 24-bit/96 kHz audio quality
  • 24 simultaneous effects
  • 8 simultaneous virtual instruments
  • Includes over ten audio effects
  • Includes two virtual instruments
  • Integrated VST/VSTi support
  • Support for ACID™ format loops
  • Support for ReWire clients such as Live or Reason
  • Active Controller Technology™ automatically maps MIDI keyboards and control surfaces to the parameters you need most on effects, instruments, volume, pan, and other mix elements
  • Edit MIDI directly from the Track View with the Inline Piano Roll View
  • Support for 32-bit and 64-bit versions of Windows 7, Windows Vista, and 32-bit Windows XP operating systems

Minimum System Requirements for SONAR 8.5 LE:

  • Operating System: * Windows XP (32-bit)
  • Processor Speed: Intel Pentium 4 1.3 GHz or AMD Athlon XP 1500+
  • Memory: 512 MB
  • Screen Resolution: 1024 x 768, 16-bit color
  • Hard Disk Space: 500 MB
  • Hard Disk Type: Any
  • MIDI Interface: ** Windows-compatible
  • Audio Interface: *** Windows-compatible
  • Media Drive: **** DVD-ROM drive
  • Webserver Access: ***** None

Recommended System Requirements for SONAR 8.5 LE:

  • Operating System: * Windows 7/Vista/XP (32 and 64-bit)
  • Processor Speed: Intel Pentium 4 2.8 GHz [EM64T] or AMD Athlon XP 2800+ or better
  • Memory: 1 GB or more
  • Screen Resolution: 1280 x 960, 24-bit color or higher
  • Hard Disk Space: 1 GB
  • Hard Disk Type: EIDE/Ultra DMA (7200 RPM) or SATA
  • MIDI Interface: ** Windows-compatible
  • Audio Interface: *** Windows-compatible
  • Media Drive: **** DVD-ROM drive
  • Webserver Access: ***** Available web server space with FTP access privileges
* SONAR LE does not support Windows 95, 98, ME, NT, or 2000.

** Required to connect external MIDI devices.

*** Required for audio playback.

**** SONAR LE is presented on DVD media. DVD-ROM Drive required for installation.

***** Cakewalk Publisher requires you to have available web server space with FTP access privileges. An internet connection is required for music uploading. A broadband connection is recommended.

Click here for free, comprehensive 178-page PDF guide to SONAR 8.5 LE recording software!

Pedal Specifications

Pedal Design
This is the style of guitar pedal. The design includes the physical housing of the pedal and the designed application.
Pedal Type
The features listed here are the capabilities and functions that this guitar pedal is designed for.
Time Alignment
Effects are digital devices that alter the way your instrument sounds. Musicians use effects to create sounds that an instrument cannot typically make by itself.
The physical controls that are available on the pedal, weather it be knobs, switches, buttons or sliders.
The types of connections that are found on the pedal.
1/4" TR
1/4" TRS
3.5mm Stereo
Expression Pedal
The types of connections that are found on the pedal.
1/4" TR
1/4" TRS

Multi-Effect Processing

Storage Type
The method in which a guitar pedal stores various data and information.
Internal Memory


Power Source
The power source is the method in which the unit receives power. Some units will be powered by batteries, while others will need to be plugged in to an AC or DC power source.
AC Adapter (Included)
Computer Connectivity
The ability of a guitar pedal to connect to a computer or an external data processor.
Input Impedance
This is the input impedance of the guitar pedal.
1M ohms
Output Impedance
This is the output impedance of the guitar pedal.
2k ohms
Primary Color
This is the main color of the item.
Secondary Color
A color that compliments the main color of the product.
The width of the item from left to right (side-to-side) measured in inches.
The height of the item, measured from top to bottom, in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
90 days
Warranty Provider

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Boss ME-25

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Boss ME-25

Guitar Multiple Effects Processor w/ COSM, Super Stack, Phrase Loop & SONAR 8.5 LE DAW


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