BOSS ME-25 Guitar Multi-Effects Processor with Expression Pedal

Explore expressive electric guitar tones without building a large pedalboard. The BOSS ME-25 combines amp modelling, versatile effects and hands-free control in a compact floor processor for practice, worship rehearsals, studio ideas and live band sets.

Start with the 60-tone Sound Library, choose a sound category and adjust Drive, Tone and Level to suit your guitar. From clear chord work to crunchy rhythm and sustained leads, the straightforward controls help you spend more time playing and less time programming.

COSM amplifier models provide a choice of amp characters, while overdrive, modulation, delay and reverb help shape your sound. Use the built-in expression pedal for wah, octave and freeze effects, or engage Super Stack when you want extra low-end weight and punch.

Build a backing phrase with the 38-second looper and practise lead lines over your own rhythm part. An AUX input supports playing along with an external music source, while USB audio connectivity offers a recording route with a compatible computer and driver. Six-AA-battery operation makes the unit convenient for rehearsals away from an available power socket.

Key Features

• The 60-tone Sound Library offers ready-to-use starting points for different playing styles.
• Sixty user memories let you store your own sounds for repeatable rehearsal and performance setups.
• COSM amplifier modelling delivers a range of amp characters in one floor unit.
• Dedicated Drive, Tone and Level controls make everyday sound adjustments straightforward.
• The built-in expression pedal provides hands-free control of wah, octave and freeze effects.
• The 38-second Phrase Loop function helps you layer ideas and practise over your own playing.
• Super Stack adds low-end weight and punch for a bigger-sounding guitar tone.
• Overdrive and distortion choices cover mild breakup through heavier rhythm sounds.
• Modulation, delay and reverb effects add movement, space and ambience to your playing.
• USB audio-interface functionality supports computer recording when used with a compatible operating system and driver.
• The AUX input lets you play along with an external music device during practice.
• Six AA batteries or an optional BOSS PSA-series adaptor provide flexible power options.

Technical Specifications

Brand: BOSS

Model: ME-25

Type: Electric guitar multi-effects processor

A/D conversion: 24-bit + AF (Adaptive Focus) method

D/A conversion: 24-bit

Sampling frequency: 44.1 kHz

User memories: 60

Sound Library: 60 tones

Sound Library categories: CLEAN, CRUNCH, DRIVE, HEAVY, LEAD, EXTREME

COMP/FX: COMP, T.WAH, AC SIM

OD/DS: 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, ULTRA METAL

MODULATION: CHORUS, PHASER, FLANGER, ROTARY, UNI-V, TREMOLO, HARMONIST, OCTAVE

DELAY: 1–99 ms, 100–990 ms, 1000–6000 ms, TAP

REVERB: ROOM, HALL

PEDAL FX: WAH, +1 OCTAVE, -1 OCTAVE, FREEZE

Noise suppression: NS (Noise Suppressor)

Phrase Loop recording time: 38 seconds

Connectivity: Guitar input, AUX input and USB audio connectivity

Nominal input level: INPUT -10 dBu; AUX IN -18 dBu

Input impedance: INPUT 1 MΩ; AUX IN 22 kΩ

Nominal output level: -10 dBu

Output impedance: 2 kΩ

Display: Seven-segment, two-digit LED

Power supply: DC 9 V; six AA R6/LR6 batteries or BOSS PSA-series AC adaptor, sold separately

Current draw: 150 mA

Continuous battery operation: Approximately 9 hours with alkaline batteries or 3 hours with carbon batteries; actual runtime varies with conditions of use

Manufacturer-listed standard accessories: Owner's Manual, Sound Library/Memory List leaflet, Sound Library Sticker, six alkaline LR6 AA batteries and Roland Service information sheet. Confirm the contents supplied with the available unit.

Optional accessory: BOSS PSA-series AC adaptor

Dimensions: 300 × 191 × 72 mm, width × depth × height

Dimensions with expression pedal raised: 300 × 191 × 93 mm, width × depth × height

Product weight: 1.9 kg including batteries; this is not a packaged shipping weight

Legacy Software System Requirements

These are the manufacturer's original software requirements, not a guarantee of compatibility with current Windows or macOS releases. Check the relevant BOSS driver and librarian support for your exact operating system before using USB features.

Windows operating systems originally listed: Windows XP Professional, XP Home Edition, Vista and Windows 7. Librarian does not support XP Media Center Edition.

Windows processor: Intel Core/Pentium 1.5 GHz or higher

Windows RAM: 512 MB or more

Windows disk space: 150 MB or more

Windows display: 1024 × 768 or higher, 24-bit full colour or more

Windows USB: USB connector supporting USB Specification Revision 1.0 or higher

Macintosh operating system originally listed: Mac OS 10.4.3 or later within the original software's supported release range

Macintosh processor: Intel processor or PowerPC G5

Macintosh RAM: 512 MB or more; 1 GB or more for Mac OS X 10.5 or later within the original supported release range

Macintosh disk space: 150 MB or more

Macintosh display: 1024 × 768 or higher, 16.7 million colours or more

Macintosh USB: Apple Macintosh-series computer with a USB connector supporting USB 1.0 or higher

FAQs

Q: Can I use the BOSS ME-25 to record guitar over USB?
A: Yes. It functions as a USB audio interface, but computer operating-system and driver compatibility must be checked before purchase. Its original software requirements do not guarantee support for current Windows or macOS versions.

Q: How do I power the ME-25 for rehearsal?
A: Use six AA batteries or a compatible BOSS PSA-series AC adaptor. The adaptor is sold separately in the manufacturer's standard specification. Confirm the actual accessories supplied with your unit before ordering.

Q: Can I get the BOSS ME-25 delivered in Nairobi today?
A: Same-day delivery within Nairobi CBD and major suburbs is available for orders placed before the daily cut-off. Contact Zamar Audio Solutions to confirm stock and lock in a delivery window. Countrywide delivery across Kenya is also available, with lead times varying by location.