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
  • 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.



Product Specs

Condition
Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand Boss
Model ME-50B
Finish Black
Categories Multi-Effect Unit, Bass Pedals

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Prompt shipping. Excellent price. Great transaction.

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Great deal and fast shipping on my favorite mastering CDs. Thanks!

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Return Window

This product can be returned within 14 days of receipt.

General Terms

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Please email us for return authorization. Upon approval only we accept returns for store credit. All returns are subject to a 15% Restocking Fee.
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Shipping product back to our warehouse is the Customers responsibility unless the product is damaged (see below). Returns will not be accepted without a return authorization number issued by RECORDING STORE Returns are not accepted for any reason after thirty (30) days from the date of the order. All shipping charges are non-refundable. We Do not credit shipping costs initially incurred to you if an order is: Undeliverable and comes back to us, if an order is refused or if an order is returned, even if there was no freight charge on your item purchase, once an order is void our shipping & handling charges incurred will be deducted from your credit.
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Boss ME-50B Bass Multi-Effects Unit
$329.99
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