The Boss ME-50B Bass Multiple Effects is a versatile floor-based multi-effects processor designed specifically for bass guitar, combining a wide range of Boss effects with straightforward stompbox-style controls.

Rather than relying on menu-heavy programming, the ME-50B gives players immediate access to compressor, EQ, drive, synth, filter, modulation, delay and expression-based effects through dedicated knobs and footswitches.

Its rugged pedalboard format makes it especially practical for rehearsal and live use, while features such as Sound Hold, Sound On Sound looping and the built-in expression pedal add a useful creative dimension beyond conventional bass effects.

This Pre-Owned example is in Very Good condition.

AT A GLANCE

Detail	Specification
Brand	Boss
Model	ME-50B
Type	Bass Multi-Effects Processor
Expression Pedal	Built In
Tuner	Built In
Condition	Very Good / Pre-Owned

PRE-OWNED CONDITION REPORT

This is a Pre-Owned Boss ME-50B Bass Multiple Effects processor in Very Good condition.

The Very Good condition grade reflects a unit that has been well looked after overall while showing the light signs of previous use expected from Pre-Owned equipment.

KEY FEATURES

• Dedicated bass multi-effects processor

• Stompbox-style control layout

• COSM compressor / limiter

• 3-band EQ

• Sweepable mid control

• Multiple drive and distortion effects

• Bass synth effects

• Tone Modify effects

• Filter-style effects

• Chorus

• Flanger

• Phaser

• Delay

• Reverb

• Sound Hold function

• Sound On Sound looping

• Kick Drum function

• Built-in expression pedal

• Assignable pedal effects

• Built-in tuner

• Memory mode

• Manual mode

• Rugged floorboard design

• Very Good Pre-Owned condition

WHY YOU'LL LOVE IT

The ME-50B remains appealing because it feels more like a collection of individual pedals than a conventional digital multi-effects unit.

Each major section has dedicated controls, meaning you can adjust sounds quickly without navigating through pages of menus.

For bassists who want compression, drive, synth, modulation, delay and expression effects in one unit, it provides a practical all-in-one alternative to building a much larger pedalboard.

DETAILED FEATURES & BENEFITS

Dedicated Bass Design

The ME-50B was designed specifically around bass guitar rather than adapting guitar effects for lower frequencies.

This helps preserve low-end weight and clarity across its compressor, drive, filter and modulation sections.

COSM Compressor / Limiter

The dedicated compressor / limiter section helps control dynamics and add consistency to the bass signal.

Different compression characters allow the effect to range from subtle levelling to a more pronounced compressed response.

Three-Band EQ

A dedicated EQ section provides Bass, Mid and Treble adjustment.

The sweepable mid control makes it easier to target the specific frequency range that needs boosting or cutting.

Drive Effects

The ME-50B includes several bass-oriented drive and distortion sounds, ranging from milder overdrive through to heavier fuzz and metal-style tones.

Hi-Band Drive

The Hi-Band setting applies distortion primarily to higher frequencies while retaining more of the original low end.

This is particularly useful when you want aggressive distortion without losing bass weight.

Bass Synth Effects

Several synth bass sounds are included, providing processed electronic-style tones for funk, electronic, experimental and modern bass parts.

Tone Modify Effects

The Tone Modify section provides preset tone-shaping options that can quickly alter the overall character of the bass.

This is useful for switching between different EQ styles without having to manually change several controls.

Filter Effects

Effects such as T-Wah and other filter-style processing allow dynamic, envelope-influenced bass sounds suited particularly well to funk and expressive playing.

Modulation Effects

The ME-50B provides modulation effects including chorus, flanger and phaser.

These can add width, movement and texture without overwhelming the fundamental bass tone.

Delay

The delay section provides rhythmic and atmospheric repeats for more spacious bass sounds.

This can be especially useful for solo bass, ambient playing and experimental arrangements.

Sound Hold

The Sound Hold function allows a note to be sustained while you continue playing over it.

This can be used creatively for drones, layered parts and solo performance.

Sound On Sound

The built-in Sound On Sound function allows short phrases to be layered.

It is useful for practice, composition and performance experimentation.

Kick Drum Function

The ME-50B also provides a Kick Drum feature, allowing a rhythmic pulse to be added while building loops and practice parts.

Built-In Expression Pedal

The integrated expression pedal can control volume or a range of assigned effects.

This makes real-time control much easier than relying on separate external pedals.

Built-In Tuner

An onboard tuner allows quick tuning checks without requiring a separate pedal.

WHO IS IT FOR?

The Boss ME-50B is particularly well suited to bassists who want a wide range of effects without building a large pedalboard.

It works especially well for rehearsal, live use, home practice and players who value immediate hands-on controls over menu-based editing.

PLAYING STYLES & APPLICATIONS

The ME-50B works across rock, funk, metal, pop, alternative, electronic, experimental and general-purpose bass playing.

Compression and EQ cover everyday tone shaping, while synth, filter and modulation effects provide much more adventurous sounds when required.

HOW IT COMPARES

ME-50B vs Individual Pedals

A traditional pedalboard allows each effect to be selected individually.

The ME-50B combines multiple effects into one rugged floorboard, reducing cabling, power requirements and setup time.

ME-50B vs Modern Menu-Driven Multi-Effects

Many newer processors offer more detailed editing and amp modelling.

The ME-50B focuses instead on immediacy, using dedicated knobs and footswitches that feel much closer to individual stompboxes.

ME-50B vs Guitar Multi-Effects

The ME-50B is specifically voiced for bass, with effects designed to preserve low frequencies and respond appropriately to bass dynamics.

PRODUCT SPECIFICATIONS

Specification	Details
Product Type	Bass Multi-Effects Processor
Brand	Boss
Model	ME-50B
Instrument	Bass Guitar
Compressor / Limiter	Yes
EQ	3-Band with Sweepable Mid
Drive / Distortion	Yes
Bass Synth	Yes
Tone Modify	Yes
Filter Effects	Yes
Chorus	Yes
Flanger	Yes
Phaser	Yes
Delay	Yes
Reverb	Yes
Sound Hold	Yes
Sound On Sound	Yes
Kick Drum Function	Yes
Expression Pedal	Built In
Tuner	Built In
Memory Mode	Yes
Manual Mode	Yes
Construction	Floorboard
Condition	Very Good / Pre-Owned

POWER REQUIREMENTS

The Boss ME-50B can be powered using a compatible Boss power adaptor or batteries.

Use the correct Boss-compatible power supply specification when powering the unit externally.

FAIR DEAL MUSIC EXPERT VERDICT ★★★★★

Best suited for: Bassists who want a wide selection of Boss effects in a rugged, easy-to-use floorboard.

Customers usually upgrade from: Individual entry-level bass pedals, basic multi-effects units and small pedalboards.

Most commonly paired with: Bass amplifiers, powered monitors, recording interfaces and live bass rigs.

Our tip: The real strength of the ME-50B is its immediacy. Treat each section like an individual pedal rather than spending time trying to build complex programmed patches.

Showroom feedback: The ME-50B remains a very practical unit for bassists who prefer physical controls. Compression, drive, modulation and synth effects are all easy to access quickly on stage or in rehearsal.

WHY BUY PRE-OWNED FROM FAIR DEAL MUSIC?

Buying a Pre-Owned Boss ME-50B can provide excellent value for bassists looking for a flexible all-in-one effects solution.

This example is in Very Good condition.

Fair Deal Music has decades of experience buying, selling and part-exchanging effects pedals, bass equipment, amplifiers and musical instruments.

WHY BUY FROM FAIR DEAL MUSIC?

When you buy from Fair Deal Music, you're choosing one of the UK's most established, independent family run music retailers since 1987.

Fair Deal Music combines a large Birmingham showroom with nationwide ecommerce and knowledgeable musician-led advice.

Customers benefit from:

• Family-run independent retailer established in 1987

• Birmingham's largest independent music store

• 6,000+ Trustpilot reviews

• Knowledgeable musician-led advice

• Extensive experience with Boss and Pre-Owned effects

• Large Birmingham showroom

• Secure online ordering

• Fast UK delivery

• Friendly customer support

• Part-exchange and trade-in service

Trade In. Trade Up. Save More.

Your current pedals, bass equipment or other musical gear could help towards the cost of this Boss ME-50B.

Fair Deal Music buys and part-exchanges effects, basses, guitars, amplifiers, keyboards and a wide range of other musical equipment.

Contact our team for a no-obligation valuation.

PART EXCHANGE / TRADE-IN

If you already own pedals, bass gear or other equipment you are considering replacing, Fair Deal Music can assess it for part exchange against this Boss ME-50B.

Trading in can remove the inconvenience of selling privately while allowing the value of your existing equipment to go directly towards your next purchase.

Trade In. Trade Up. Save More.

Contact Fair Deal Music for a no-obligation valuation.

FREQUENTLY ASKED QUESTIONS

Is this Boss ME-50B used?

Yes. This is a Pre-Owned Boss ME-50B in Very Good condition.

Is the ME-50B designed specifically for bass?

Yes. Its effects and processing are designed specifically for bass guitar.

Does it have compression?

Yes. It has a dedicated compressor / limiter section.

Does it have EQ?

Yes. It includes a 3-band EQ with sweepable mid control.

Does it have distortion?

Yes. Several bass-focused drive and distortion effects are included.

Does it have fuzz?

Yes. The drive section includes heavier fuzz-style sounds.

Does it have synth bass sounds?

Yes. Several bass synth effects are included.

Does it have chorus?

Yes.

Does it have phaser?

Yes.

Does it have flanger?

Yes.

Does it have delay?

Yes.

Does it have reverb?

Yes.

Does it have an expression pedal?

Yes. A built-in expression pedal is fitted.

What can the expression pedal control?

It can be assigned to volume and several expression-based effects.

Does it have a tuner?

Yes. A built-in tuner is included.

Can it store sounds?

Yes. The ME-50B includes a memory mode for recalling stored settings.

Can it work like individual stompboxes?

Yes. Manual mode allows the main sections to be controlled much like separate pedals.

Does it have a looper?

It includes a Sound On Sound function for layering short phrases.

What is Sound Hold?

Sound Hold sustains a note while allowing you to continue playing over it.

What condition is it in?

This example is in Very Good condition.

Can I part-exchange pedals against it?

Yes. Fair Deal Music considers pedals and a wide range of other musical equipment for part exchange.