MB3 Magic Box True 3-Way Portable PA Speaker | Classic Black

MB3 Magic Box True 3-Way Portable PA Speaker

$799.00 USD $999.00 USD 20% OFF

In stock

👉 Build Your Setup CORE SETUP SOLO SETUP GIG READY DUO SETUP

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At BETA THREE, we design our products to deliver reliable sound for real-life performances, events, rehearsals, and everyday use. We stand behind the quality of our products and offer a 2-year limited warranty for eligible BETA THREE products purchased from betathree.com.

For approved warranty claims, we will take appropriate action based on the specific situation: coordinating repairs with a local service provider, supplying replacement parts, arranging a product replacement, or providing an agreed-upon repair subsidy. Customers are not required to ship the product overseas unless a reasonable local solution cannot be provided.

Founded in 1988, BETA THREE designs professional audio systemsclear sound, wide coverage and dependable reliability.
From battery-powered portable PA and column PA systems to venue-ready solutions,we make it easy to get consistent results, anywhere.

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More than 7,000 classic cases

BETA THREE has been deeply involved in the audio industry for 38 years, providing professional sound reinforcement services worldwide.

AZ Samad

@AzSamad

The three inputs allow me to perform a small gig without carrying an extra mixer.

Дмитрий Четвергов

@chetvergoff

All it takes is three people plugging in their various instruments and adding a Bluetooth backing track—and you’ve got a full band.

Icco Elnoel

@IccoElnoel

Sounding good so far on bass. Surprisingly loud!

Сергей Табачников

@stereodamage

No matter where we go, the built-in battery saves the day... With 200 watts of powerful sound, a weight of 7.5 kg, and 8 hours of battery life—isn't that a real feast for the senses?

Liya Bragina

@garmonistka

It is highly portable and lightweight, and can operate without being plugged into a power source; plus, you can simply turn it on and sing karaoke. Compared to many other speakers of this type, the sound quality is excellent...

Sergei Sun

@SergeiSun

A powerful, versatile Bluetooth speaker. You can use it as your main audio system or as a monitor.

See what our users are saying

Up to 8 Hours

7.5 KG

Versatile Input

True Wireless Stereo

Enclosure Type	Bass reflex
Transducer Complement	3-way(8"woofer, 5"+1"coaxial unit)
Max SPL	110dB(116dB peak)
Frequency Response	60Hz-20kHz(-3dB)
Amplifier Power	200W RMS/400W music/800W peak
Inputs	3x XLR/TRS combo, 1x3.5mm, Bluetooth
Outputs	1x XLR main in,1x XLR main out
Battery Life	Up to 8 hours
Dimensions(WxDxH)	259 x 292 x 390mm
Net Weight	7.5kg

Three Drivers. One True Performance.

With dedicated drivers for highs, mids and lows, MB3 gives every part of your performance the space it deserves. Vocals stay clear, instruments sound natural, and the bass remains powerful without covering the details.

DSP Smart Sound, Built In.

The built-in DSP continuously manages your sound for better clarity, balance and stability. Less time fighting with complicated settings, more time focusing on your performance.

Your Sound, One Turn Away.

Turn toward Music for a fuller, more energetic sound, or move toward Vocal to bring voices forward with greater clarity. No menus, no complicated EQ—just turn the control and hear the difference.

One Sounds Great. Two Build a Stage.

Wirelessly connect two MB3 speakers for a wider, more immersive listening experience. Use one for a compact setup, then add another when you need more coverage and a stronger sense of space.

Everything You Need, Right on Top.

The control panel keeps your most important connections and adjustments within easy reach. Clear controls help you connect, set levels and start performing without wasting time searching through complicated menus.

Want to Compare?

Key Features	Brand A	BETA THREE MB3	Brand B
True 3-Way	❌	✅	❌
Intermediate Frequency	❌	5-inch independent intermediate frequency	❌
Coaxial Structure	❌	Mid-to-high frequency coaxial design	❌
Amplifier Power	150W Peak	800W Peak	400W Peak
Max SPL	112 dB	116 dB	121 dB
Frequency Response	37.5Hz-20kHz	60Hz~20kHz (+3 dB)	60Hz-20kHz
Weight	8KG	7.5KG	7.6KG

FAQ

MB3 is a true 3-way, battery-powered portable PA speaker with built-in mixer-style connectivity. It is designed for singers, musicians, buskers, music teachers, worship teams, event hosts, cafés, rehearsals and small live performances.

It combines an 8-inch woofer with a 5-inch and 1-inch coaxial mid/high-frequency unit, helping vocals, instruments and backing tracks remain clear and balanced across the full mix.

A true 3-way system assigns low, middle and high frequencies to dedicated drivers.

The 8-inch woofer handles the low end, while the separate midrange and high-frequency drivers help vocals and instruments sound more natural and defined. This is especially useful when playing voice, instruments and backing tracks through the same speaker.

Instead of forcing one small driver to reproduce everything, MB3 is designed to keep the mix clearer from the bass through the vocal range and upper frequencies.

One MB3 is suitable for many solo performances, busking sessions, rehearsals, classrooms, cafés, presentations and small events.

The result will depend on the room, audience size, background noise, speaker position and required volume. For wider coverage, stereo playback or larger spaces, the DUO setup with two MB3 speakers is the better choice.

If you are unsure, contact us with your venue size, audience size and intended use. We can help recommend a suitable setup.

Yes.

MB3 includes:

* 3 × XLR/TRS combo inputs;
* 3.5 mm auxiliary input;
* Bluetooth audio playback;
* XLR Main Input and Main Output.

A typical solo setup could include:

* Vocal microphone;
* Guitar or keyboard;
* Backing tracks from a phone.

For many small performances, this means you can work without carrying a separate external mixer.

Not necessarily.

MB3 is designed to handle common microphone, instrument and playback setups directly through its onboard inputs.

You may still prefer an external mixer if you need:

* More than three main input sources;
* More advanced channel routing;
* Multiple monitor mixes;
* Detailed multiband processing;
* A larger band or more complex event setup.

For solo performers, duos, teachers, hosts and small performances, MB3 can often be used as a self-contained sound system.

Yes.

MB3 includes built-in Reverb and an Anti-Feedback Notch function. Reverb can add space and depth to vocals or instruments, while the anti-feedback function helps manage problematic frequencies in reflective or challenging performance environments.

Correct microphone placement and speaker positioning are still important. No feedback-control system can completely compensate for placing a live microphone directly in front of the speaker at high volume.

MB3 is rated at:

* 200W RMS;
* 400W music power;
* 800W peak power;
* Up to 110dB SPL and 116dB peak at 1 metre.

It is designed to provide confident output for portable live sound, rehearsals, busking, cafés and small events without requiring a large traditional PA system.

Actual perceived volume and coverage depend on the room, placement, programme material and listening distance.

MB3 provides up to 8 hours of battery operation under suitable operating conditions.

Actual battery life varies according to:

* Playback volume;
* Programme material;
* Connected inputs;
* Battery condition;
* Operating temperature;
* Usage of Bluetooth and onboard processing.

Higher continuous output will normally reduce the total operating time.

Yes.

MB3 supports three practical placement options:

* Upright as a main PA speaker;
* Angled on the floor as a wedge monitor;
* Mounted on a compatible speaker stand.

For better audience coverage, raising the speaker above waist level and aiming it toward the listening area is generally more effective than placing it directly on the floor.

Yes.

Two MB3 speakers can be used to increase coverage or create a wider stereo setup.

MB3 supports:

* True Wireless Stereo pairing between two compatible MB3 units;
* Wired system expansion through XLR Main Input and Main Output.

For important live events, wired linking may provide the most predictable connection. Wireless stereo is useful when you want a cleaner setup with fewer signal cables.

Yes. MB3 is battery-powered, portable and designed for mobile performance applications such as busking, pop-up events and outdoor sessions.

However, MB3 is not promoted as waterproof. It should be protected from rain, liquid, excessive moisture, extreme heat and other unsuitable environmental conditions.

Outdoor coverage also depends heavily on surrounding noise and the absence of walls to reinforce the sound.

MB3 weighs approximately 7.5kg and measures:

259 × 292 × 390mm

The integrated portable format makes it easier to carry than a conventional speaker, mixer and monitor system transported separately.

For frequent travel or mobile performances, the GIG READY setup adds a speaker stand and carry bag.