A Bass Player’s Dream Come True.
The BOSS ME-50B puts world-class bass effects in a rugged floor unit with easy pedal-style control. Effects are divided into six sections—Compressor/Limiter, Master, Filter/Tone, Drive/Synth, Delay/Modulation and Expression Pedal—giving bassists a range of unique and powerful tones including new effects like Sound Hold, Octave Up and Kick Drum. Effects can be edited using 23 knobs and controlled via three built-in footswitches and an assignable expression pedal. This is the piece no bass player should be without!
- Floor-based bass multi-effects processor with easy analog control
- Killer COSM Compressor/Limiter and Drive effects, plus T-Wah, Slow Gear and Defretter
- Innovative Sound Hold function for sustaining a low note while playing on top
- Sound On Sound recording with new Kick Drum effect for keeping time
- Dedicated knobs for each effect section—no menu-surfing!
- Easy Tone effects with Preset EQ templates for quick tone editing
- 3 footswitches and onboard expression pedal routed to 6 options like Octave, Wah, etc.
- Solid metal case built to withstand abuse
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Multi-Effects Made Simple
BOSS understands that bass players want access to powerful effects, but they don’t want to get caught up in the menus and programming hassles of a multi-effects processor. Enter the ME-50B. Just like its guitar-oriented sibling, the new ME-50B puts BOSS’ finest multi-effects for bass into a convenient floor processor with the feel of a compact pedal. Forget about menus and cursor buttons. Just reach down and twist a knob!
Independent COSM Compressor/Limiter and EQ
Everyone knows that the fundamentals of good bass tone are compression and EQ. That’s why the ME-50B features two dedicated sections for these essential effects. The Compressor/Limiter uses advanced COSM modeling—including a “Natural” compression setting that retains the nuances of your playing—to give you tight, punchy tone. Simply select the compressor “Type” and adjust the Sustain/Threshold knob to get the tone you want. The Master section includes a 3-band EQ with a sweepable mid for precise tonal shaping.
Get Creative with Cool Filter/Tone Effects
The ME-50B includes a variety of unique tone-shaping effects just for bass. These include a handy “Octave Up” effect, which adds a note one octave above the original while retaining your natural bass sound—complete with adjustable drive on the octave-shifted note—plus favorites like Slow Gear, T-Wah and a Defretter effect for instant fretless sounds. Using the Tone effect preset, you can get quick tonal variations with preset EQs like “Bottom Boost” and “Mid Shape.”
Incredibly Warm Overdriven Sounds and More
Want some extra bite? Switch on the ME-50B’s Drive effects, which include settings like “Muff Fuzz,” “Bass Driver,” “Natural” and “Metal” to give you a range of overdriven/distorted sounds. A new “Hi Band” effect creates a distorted sound on the high frequencies while keeping the lower frequencies intact—perfect for creating complex tones while keeping your original playing dynamics. There are also four synth bass sounds with superb tracking and natural feel.
Sound On Sound with a Twist
Sound On Sound recording is very popular with guitarists, and now bass players can build their own loops, too. But the ME-50B can do even more. Using the new Kick Drum function, players can tap in their own kick drum and create loops over the beat. If that’s not enough, check out the new Sound Hold function, which lets you endlessly sustain a low note while playing over it. With the ME-50B, bassists can take their playing to a whole new level.
- AD Conversion
- 24 bit + AF method*
- DA Conversion
- 24 bit
- Sampling Frequency
- 44.1 kHz
- Patches
- 24 (user)
- Effects
- Compressor / Limiter
Filter / Tone: T. Wah, Octave (Up / Down), Slow Gear, Defretter, Enhancer, Bottom Boost, Mid Shape, Hollow
Drive / Synth: Overdrive / Distortion, Bass Synth
Delay / Modulation: Delay, Phaser, Flanger, Chorus, Reverb
Noise Suppressor
Master EQ
Effects for Expression Pedal: Foot Volume, Wah, Resonance, Bend (+1 OCTAVE, -1 OCTAVE), Sound Hold, Kick Drum - Nominal Input Level
- INPUT: -10 dBu
AUX IN: -10 dBu - Input Impedance
- INPUT: 1 M ohms
AUX IN: 100 k ohms - Nominal Output Level
- -10 dBu
- Output Impedance
- 2 k ohms
- Display
- 7 segments, 1character LED
- Connectors
- INPUT jack
OUTPUT jacks L (MONO)/ R
AUX IN jack (Stereo Mini type)
PHONES jack
FOOT SW (COMP ON/OFF, TEMPO)
AC Adaptor jack - Power Supply
- DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series: Optional)
- Current Draw
- 140 mA
- Accessories
- Owner's Manual
Dry Batteries (Alkaline: LR6 (AA) type) x 6 - Options
- AC Adaptor: BOSS PSA series
Foot Switch: BOSS FS-5U
Dual Footswitch: BOSS FS-6, BOSS FS-7 - Size and Weight ( incl. batteries )
- Width
- 384 mm
15-1/8 inches - Depth
- 225 mm
8-7/8 inches - Height
- 78 mm
3-1/8 inches - Weight
- 3.2 kg
7 lbs. - * 0 dBu = 0.775 Vrms * AF method (Adaptive Focus method) This is a proprietary method from Roland that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.
- *The specifications are subject to change without notice.
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Audio Library
- FS-5U/FS-5L Foot SwitchDurable metal footswitch available in latching and unlatching types.*Some products are compatible with either FS-5U or FS-5L only. Please check the specs to confirm the suitable model. View Product
- FS-6 Dual FootswitchTwo switches in one, BOSS’s FS-6 combines latch- and momentary-type switching into one unit. View Product
- FS-7 Dual FootswitchCompact, multifunctional dual footswitch for remote control of effect pedals or amp channel switching. View Product
- BCK-2 Solderless Pedalboard Cable KitPremium two-piece solderless cable kit for wiring your pedalboard. View Product
- BCK-6 Solderless Pedalboard Cable KitPremium six-piece solderless cable kit for wiring your pedalboard. View Product
- BCK-12 Solderless Pedalboard Cable KitPremium 12-piece solderless cable kit for wiring your pedalboard. View Product
- BCK-24 Solderless Pedalboard Cable KitPremium 24-piece solderless cable kit for wiring your pedalboard. View Product
- BIC-PC Instrument CablePatch/pedal cable—right-angle 1/4-inch connectors, 6-inch/15 cm length. Available individually or in a package of three (BIC-PC-3). View Product
- BIC-1AA Instrument CablePatch/pedal cable—right-angle 1/4-inch connectors, 1 ft./30 cm length. Also available in 3 ft./1 m (BIC-3AA) length. View Product
- BIC-5 Instrument CableStraight 1/4-inch connectors, 5 ft./1.5 m length. Also available in 10 ft./3 m (BIC-10), 15 ft./4.5 m (BIC-15), and 20 ft./6 m (BIC-20) lengths. View Product
- BIC-10A Instrument CableStraight to right-angle 1/4-inch connectors, 10 ft./3 m length. Also available in 15 ft./4.5 m (BIC-15A) length. View Product
- BSL-25-BLK Instrument StrapBlack leather strap, 2.5-inch width. Also available in 3-inch width (BLS-30-BLK). View Product
- BSL-25-BRN Instrument StrapBrown leather strap, 2.5-inch width. Also available in 3-inch width (BSL-30-BRN). View Product
- BSS-25-BLK Instrument StrapBlack premium suede strap, 2.5-inch width. Also available in brown suede (BSS-25-BRN). View Product
- BSC-20-BLK Instrument StrapBlack cotton strap, 2-inch width. Also available in brown (BSC-20-BRN) and natural (BSC-20-NAT). View Product
- BSB-20-BLK Instrument StrapHigh-quality black nylon provides rugged durability and a smooth, comfortable feel. View Product
- BSH-20-BLK Instrument StrapUltra-durable black nylon with high-quality black leather end tabs. View Product
- BSH-20-NAT Instrument StrapNatural cotton with high-quality brown leather end tabs. View Product
Downloads
Brochures & Catalogs
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ME-50B Brochure
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BOSS Product Catalog 2014
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BOSS Product Catalog 2012
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BOSS Product Catalog 2011
Support
If you have questions about operating your BOSS 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 Owner’s Manuals and Support Documents that you can download and reference.
Owner’s Manuals
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Owner's Manual
Support Documents
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BOSS Product Catalog 2008
Forging the Future - Innovation for Creative Inspiration
BOSS forges into 2008 with an awe-inspiring lineup of effects, digital studios, and accessories. -
Guitar Effects Guidebook Vol. 20
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ME-50B TurboStart
