Ultimate Ears Megaboom 3 vs Ultimate Ears Boom 4

Last updated: August 18, 2026

Short answer: the Ultimate Ears Megaboom 3 for better sound quality, the Ultimate Ears Boom 4 for the lower price. The Ultimate Ears Megaboom 3 ranks #83 of 136 medium speakers at $163. The Ultimate Ears Boom 4 ranks #88 at $105, $58 cheaper.

What the Ultimate Ears Megaboom 3 gets right: IP67 rated, floats, and survives drops from up to 1 meter. The catch: Not stereo, barely any bass.

On the Ultimate Ears Boom 4 side: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. Set against that: Not much improvement over the old ones.

Buy the Ultimate Ears Megaboom 3 if sound quality matters more than the price. Buy the Ultimate Ears Boom 4 if the price matters more than sound quality.

Buy the Ultimate Ears Megaboom 3 at Amazon ($163) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

Ultimate Ears Megaboom 3 vs Ultimate Ears Boom 4

Specifications Side By Side

Ultimate Ears Megaboom 3 Ultimate Ears Boom 4
Price$163$105
Ranked#83 of 136 in Medium Size Portable Bluetooth Speakers#88 of 136 in Medium Size Portable Bluetooth Speakers
Bass Extension (-10dB)70Hz-
Battery Life20 hours (Manufacturer specified)15 hours (Manufacturer specified)
Max Volume98dB85dBC
Party ModeYes (PartyUp up to 50 speakers)-
Power InputMicro USBUSB-C
StereoNoYes
OmnidirectionalYesNo
Weight2 lbs / 925 g1.4 lbs / 620 g
Bluetooth Version4.25.1
Drivers2x 50mm fullrange2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
Dimensions3.4" x 8.9" x 3.4" (87 x 225 x 87 mm)7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Frequency Response60Hz - 20kHz (Manufacturer specified)-
IP RatingIPX7IP67
Digital Aux InputNoNo
App-Yes
TWS-Yes
EQ-Yes (via app)
Built in Microphone-No
Power Bank-No
Aux Input-No
Buy the Ultimate Ears Megaboom 3 at Amazon ($163) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Ultimate Ears Megaboom 3: $163 Amazon

Ultimate Ears Megaboom 3 ranking card

Pros: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life - about double most speakers this size.

Cons: Not stereo, barely any bass. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2018. Not technically a 360 speaker, only front and rear.

Full Ultimate Ears Megaboom 3 review and specifications →

Bass Extension (-10dB)70Hz
Battery Life20 hours (Manufacturer specified)
Bluetooth Version4.2
Digital Aux InputNo
Dimensions3.4" x 8.9" x 3.4" (87 x 225 x 87 mm)
Drivers2x 50mm fullrange
Frequency Response60Hz - 20kHz (Manufacturer specified)
IP RatingIPX7
Max Volume98dB
OmnidirectionalYes
Party ModeYes (PartyUp up to 50 speakers)
Power InputMicro USB
StereoNo
Weight2 lbs / 925 g
Check current price at Amazon ($163) →Search eBay for Ultimate Ears Megaboom 3 →

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Ultimate Ears Boom 4: $105 Amazon

Ultimate Ears Boom 4 ranking card

Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.

Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%

Full Ultimate Ears Boom 4 review and specifications →

AppYes
Aux InputNo
Battery Life15 hours (Manufacturer specified)
Bluetooth Version5.1
Built in MicrophoneNo
Digital Aux InputNo
Dimensions7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Drivers2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
EQYes (via app)
IP RatingIP67
Max Volume85dBC
OmnidirectionalNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight1.4 lbs / 620 g
Check current price at Amazon ($105) →Search eBay for Ultimate Ears Boom 4 →

As an eBay Partner, we may be compensated if you make a purchase.