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Cylindrical black fabric speaker with flat ends and a carrying loop

Ultimate Ears

Ultimate Ears 984-001390 portable speaker

SKU CH-4YFM-Y3NJ3 MPN 984-001390

A waterproof 360-degree Bluetooth speaker delivering 20-hour battery life, IP67 dust and water resistance, and a 45-metre wireless range

  • ColorBlack
  • SpecificationSelect the best Sound for different occasions with 4 differe
  • CompatibilityFor Audio Playback: Smartphones, tablets and other devices t
  • Operating RangePair up to 8 Bluetooth enabled source devices - Connect up t
  • Woofer SizeDrivers: Two 50mm (2 in), 4 ohm full range drivers and two 5
  • FeaturesLoud And True MEGABOOM 3 features powerful, immersive sound.
  • 360° immersive sound with deep bass you can feel
  • Magic Button plays, pauses and skips tracks directly on the speaker
  • IP67 waterproof and dustproof — submersible for 30 minutes and floats
  • Up to 20 hours battery life on a single charge
  • Pairs up to 8 devices, connects 2 simultaneously with 45 m range

What the MEGABOOM 3 is and who it suits

The Ultimate Ears MEGABOOM 3 is a portable Bluetooth speaker built for 360-degree sound. It targets listeners who want a single, rugged unit for outdoor gatherings, travel or home use. The cylindrical fabric-covered design produces immersive audio with deep bass you can feel. It is not for buyers who need stereo separation from two separate cabinets or a built-in voice assistant.

Practical limits of the Bluetooth interface

The speaker pairs with up to eight source devices and holds two active connections simultaneously. Wireless range extends to 45 metres or 150 feet in open space. Playback relies on the A2DP profile, so any phone, tablet or computer supporting that profile will stream audio. The Micro USB port charges the battery in about 2.5 hours. There is no auxiliary input, so wired sources cannot be connected directly.

Installation ease and common pitfalls

Power on, enable Bluetooth on your device and select MEGABOOM 3 from the list — no app is required for basic playback. The Magic Button on top handles play, pause and track skip without reaching for your phone. The IP67 rating means it survives full submersion for 30 minutes and floats, but the charge port cover must be sealed before water exposure. A frequent issue is forgetting to update firmware through the companion app, which can improve stability and add EQ presets.

Highlights

  • 360° immersive sound with deep bass you can feel
  • Magic Button plays, pauses and skips tracks directly on the speaker
  • IP67 waterproof and dustproof — submersible for 30 minutes and floats
  • Up to 20 hours battery life on a single charge
  • Pairs up to 8 devices, connects 2 simultaneously with 45 m range

Specifications

BrandUltimate Ears
Model984-001390
ColorBlack
SpecificationSelect the best Sound for different occasions with 4 different presets and a customized tuner.
Rechargeable Lithium-Ion Battery for up to 20 hours of battery life between Micro USB charges.
Maximum Sound Level: 90dBA.
Frequency Range: 60Hz - 20kHz.
CompatibilityFor Audio Playback: Smartphones, tablets and other devices that support Bluetooth and Bluetooth Smart wireless audio profile [Advanced Audio Distribution Profile (A2DP)].
Operating RangePair up to 8 Bluetooth enabled source devices - Connect up to two source devices at the same time. Mobile range of play is up to 45m (150 ft.).
Woofer SizeDrivers: Two 50mm (2 in), 4 ohm full range drivers and two 55mm x 86mm passive radiators.
FeaturesLoud And True
MEGABOOM 3 features powerful, immersive sound. But it's also carefully balanced and perfectly clear. Featuring Ultimate Ears unique sound processing, it produces audio faithful to the music you love, and at every volume level.
Spatial 360 degree Sound
In MEGABOOM 3 we've perfected the iconic cylindrical design we pioneered to deliver immersive, stereophonic audio that radiates evenly in all directions.
Thundering Bass
MEGABOOM 3's extra size and larger woofer create intense bass you can both hear and feel - 50% deeper than BOOM. But unlike most other portable speakers,
Dimensions8.88" x 3.38" (H x Dia.)
Weight2.04 lbs.
Shipping weight0.95 kg
Package size356 × 191 × 171 mm

Questions about this item

How do I pick between the Night Black MEGABOOM 3 and other colour versions of the same speaker?

The 984-001390 model is supplied in Night Black only; choose this version if you want that specific two-tone fabric finish.

What does the 90 dBA maximum sound level mean when the speaker is playing in a typical room?

90 dBA is the peak output the two 50 mm drivers and dual passive radiators can reach, delivering 360-degree sound that fills a medium-sized space with clear, bass-heavy audio.

How does the Bluetooth connection limit the wireless range and device pairing in daily use?

Bluetooth pairs up to eight source devices and keeps two active simultaneously, with a practical mobile range of up to 45 m (150 ft) for uninterrupted streaming.

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