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Monster Blaster 3.0 Water-resistant portable Bluetooth® speaker (Black)

Item # 379BLST3B

Let the Monster Blaster 3.0 power up your party with 120 watts pumping out the tunes.

Let the Monster Blaster 3.0 power up your party with 120 watts pumping out the tunes.

California customers:
Please click here for your Proposition 65 warning.

2 questions - 2 answers

Item # 379BLST3B

Low stock
$349.99 Sale: -$150.00 off

About the Monster Blaster 3.0

Ralph Graves

Get ready for Monster sound

Kick your party into high gear with the Monster Blaster 3.0. This boombox-style portable Bluetooth speaker packs 120 watts of power to crank out your tunes with serious bass, indoors or out.

Get ready for Monster sound

Kick your party into high gear with the Monster Blaster 3.0. This boombox-style portable Bluetooth speaker packs 120 watts of power to crank out your tunes with serious bass, indoors or out.

The Blaster 3.0 delivers full, omnidirectional sound, thanks to its seven-speaker array. Four full-range drivers, two positioned on each side of the box, spread your music over a wide area. The powered subwoofer is reinforced by two passive radiators for solid lows.

Portable pluses

The Blaster is water-resistant, so you don't have to worry about occasional splashes or spills. Go ahead and grab it by its built-in handle and take the party poolside.

Enjoy up to 12 hours of music playback from the built-in 5,200mAh rechargeable battery. Or use some of that reserve power to keep your smartphone going via the built-in USB Type-A charging port.

The Environment EQ™ feature is a cool extra: simply press the large "Mode" button on the side to adjust the sound for indoor or outdoor listening.


Product highlights:

  • built-in Bluetooth 5.1 for streaming from your smartphone or tablet
  • four 2-1/4" full-range drivers, one 5-3/4" active subwoofer, and two passive radiators
  • 120 watts RMS (15 watts x 4 full-range drivers, 60 watts subwoofer)
  • auxiliary stereo minijack input
  • microphone minijack input
  • NFC touch pairing (for Android™ phones only)
  • side-mounted control buttons
  • selectable indoor or outdoor EQ mode
  • IPX5-rated water-resistant
  • USB Type-A port for smartphone charging
  • 5,200mAh built-in rechargeable lithium-ion battery lasts up to 12 hours
  • AC power adapter included
  • 18-5/8"W x 8-5/16"H x 7-3/4"D
  • weight: 16.2 lbs.
  • warranty: 2 years
  • MFR # 2MNSK0928B0L2

What's in the box:

  • Bluetooth portable speaker
  • 69" AC power adapter (attached 58" DC cord)
  • AC power cord
  • Manual and Warranty booklet

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More details on the Monster Blaster 3.0

Stacey B.

Features & specs

Physical Design
Width 18.5625
Height 8.3125
Depth 7.75
Weight 12.95
Weather Resistance Water-resistant (IPX5)
Color Black
Power and Battery Info
Built-in Battery Y (12 hours)
Charges External Device Via USB Yes
Runs On AC Power Yes
USB Charge only
Aux Inputs 1
Headphone Jack 0
Bluetooth Version And Supported Audio Formats
Bluetooth Version 5.1
aptX No
aptX-HD No
Other Wireless Features
Hands-free Calling No
Wi-Fi No
Apple AirPlay No
Stereo Pairing No
Unison Pairing (Party Mode) Yes
Driver Details
Tweeter Size 0
Tweeter Type N/A
Midrange Size 2.25
Midrange Type Cone
Woofer Size 5.75
Woofer Type Cone
Audio Specs
Frequency Response 80-15k
Amplification (Watts RMS) 120
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Water-Resistant (IPX5): The Monster Blaster 3.0 portable Bluetooth speaker is water-resistant and IPX5-rated. The IPX5 rating means it can withstand a sustained, low-pressure water jet spray. Suitable for rain or shine, you can feel confident bringing the Blaster 3.0 speaker by the pool, to the park, on your camping trip, and other adventures.

  • There is an integrated rubber cover that protects the Aux input, Mic input, USB-A port, and AC power adapter jack. This integrated cover needs to remain on for the speaker to be fully IPX5-rated.
  • The Monster Blaster 3.0 is water-resistant, but not waterproof. It should never be submerged in water or other liquids, or subjected to heavy rain or intense water spray.

Full-Range Sound: The Monster Blaster 3.0 houses a total of seven combined speakers including four 2.25" full-range drivers, one 5.75" subwoofer, and two passive radiators for a frequency response of 80Hz to 15kHz. The four full-range drivers are front-firing (two on each side), while the subwoofer and two passive radiators are down-firing. The Monster Blaster 3.0 delivers 120 watts of power (15W x 4ch for the full-range drivers and 60W x 1ch to the subwoofer) for dynamic and clear sound at any volume level without distortion.

Note: There is an Environment EQ Mode button that adapts the Blaster 3.0 speaker to your surroundings and gives you extreme loudness and clarity wherever you are, indoors or outdoors.

Bluetooth 5.1: The Monster Blaster 3.0 speaker features built-in Bluetooth 5.1 with support for wireless audio streaming (A2DP 1.2) and control AVRCP (1.2). The speaker system offers SSP and NFC pairing for easy connection. You can pair multiple Bluetooth-enabled devices to the Blaster 3.0, but only one device can be connected and used at a time. It has a Bluetooth wireless range of approximately 30-feet.

  • Wireless Audio Streaming: You'll be able to wirelessly streaming stored music, music apps, and other audio content on your Bluetooth-enabled smartphone, tablet, laptop, or desktop computer to the Blaster 3.0 speaker. Playback control and song/artist/album information will still be done from your Bluetooth-source device.
  • SSP & NFC Pairing: Secure Simple Pairing (SSP) lets you pair the Blaster 3.0 speaker and your Bluetooth-enabled device without any complicated pin-codes. Near Field Communication (NFC) goes a step further and lets you pair your Bluetooth-enabled Android device with the Blaster 3.0 speaker by simply touching the Android device to the side of the speaker.

Note: The Monster Blaster 3.0 does not offer support for Bluetooth hands-free communication (HFP) for making or answering phone calls.

Aux & Mic Inputs: In addition to Bluetooth, the Blaster 3.0 speaker is equipped with a 3.5mm Aux input and a 3.5mm Mic input. The 3.5mm Aux input lets you connect an external portable device that lacks Bluetooth, but does have an analog output or headphone jack. The 3.5mm Mic input lets you connect a dynamic microphone (sold separately), so you can sing along to your music through the speaker.

USB-A Power Bank: The Monster Blaster 3.0 features a built-in USB-A power bank and is outfitted with a USB-A charging port (5V/2A) to charge your portable electronic devices, like your smartphone or tablet. The built-in power bank has a battery life of up to 12 hours.

Power Requirements: The Monster Blaster 3.0 can be powered via the included AC power adapter or its built-in lithium-ion rechargeable battery (11.1V/5200mAH). The built-in rechargeable battery offers up to 12 hours of music playback time (dependent on volume level and audio content). The AC power adapter can be used to recharge the battery. It takes approximately 6.5 hours to fully charge the battery.

Side-Mounted Controls: The Monster Blaster 3.0 features convenient side-mounted push-button controls that operate Power On/Off, EQ Mode, Volume Up/Down, and Bluetooth Pairing.

Carry Handle: An integrated carry handle makes it easier to transport the Monster Blaster 3.0 portable Bluetooth speaker indoors and outdoors. The portable Bluetooth speaker only weighs 12.95 lbs.

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Customer Q&A

2 questions already asked

I think I plugged another wrong charger into speaker and believe it's no longer charging, what can I do? It doesn't show the green lights for advancing when plugged in.
frances  Jun 04, 2023
1 answer
That is a tough situation Frances, and I cannot diagnose the issue from here. Only the included AC power adapter should be used with the Monster Blaster 3.0, using any other power source even accidentally could damage the internal battery. I would suggest leaving the unit plugged in with the correct power adapter for a good period of time then testing the battery to see if there is any charge, even with the indicator lights not functioning. I hate to deliver bad news, but I hope this helps!
bo  Jun 05, 2023 (Staff)
Does this stay powered on while plugged in or does it turn off after a certain period of time. If it does stay on does bluetooth automatically pair once back in range or do you need to repair?
bryan  Dec 19, 2022
1 answer
Greetings Bryan, and thank you for your question. I have sent out an email to Monster as they did not have a direct contact to get an answer to your question. Its been well over a week now, and still no word. If I hear anything from them, I will add to this post. Thank you for understanding.
hogan  Dec 27, 2022 (Staff)

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