Marshall Emberton III vs Ultimate Ears Wonderboom 2

Last updated: August 20, 2026

Short answer: the Ultimate Ears Wonderboom 2. It ranks #86 of 136 medium speakers by sound quality at $80; the Marshall Emberton III ranks #99 and costs $129.99, so there is not much of a tradeoff to weigh.

The case for the Marshall Emberton III: 30 hour battery life, among the best in its class; a 20 min quick-charge gives 4 hours. The catch: Strange unnatural echo-like sound coloration, bass not as deep as competitors.

On the Ultimate Ears Wonderboom 2 side: IP67 rated and floats. Watch for: Not stereo, barely any bass, recessed treble.

Buy the Ultimate Ears Wonderboom 2. It ranks higher for sound quality than the Marshall Emberton III and costs less, so there is no real case for the other one.

If battery life is a priority, the Marshall Emberton III is rated for 32 hours versus 12 hours for the Ultimate Ears Wonderboom 2.

Marshall Emberton III vs Ultimate Ears Wonderboom 2

Specifications Side By Side

Marshall Emberton III Ultimate Ears Wonderboom 2
Price$129.99$80
Ranked#99 of 136 in Medium Size Portable Bluetooth Speakers#86 of 136 in Medium Size Portable Bluetooth Speakers
AppYesNo
Bass Extension (-10dB)62Hz82Hz
Battery Life32 hours (Manufacturer specified)12 hours (Manufacturer specified)
Party ModeYes (Marshall Stack)No
Weight1.5 lbs / 673 g0.9 lbs / 420 g
IP RatingIP67IP67
Bluetooth Version5.35.1
Dimensions6.3" x 2.7" x 3" (160 x 68 x 76 mm)4.1" x 3.8" (104 x 95.3 mm)
Drivers2x 2" full-range cone drivers + 2x 2" passive radiators2x 40mm active drivers + 2x passive radiators
TWSNoYes
EQYes (3 presets via app)No
Built in MicrophoneYesNo
StereoYesNo
OmnidirectionalYesYes
Power InputUSB-CMicro USB
Power BankNo-
Aux InputNo-
Output Power20W-
Bluetooth CodecsSBC-
Digital Aux InputNoNo
Max Volume-88dB

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

The Two Speakers In Full

Marshall Emberton III: $129.99 Amazon

Marshall Emberton III ranking card

Pros: 30 hour battery life - among the best in its class; a 20 min quick-charge gives 4 hours. IP67 rated, durable rubbery build using 50% recycled plastic.

Cons: Strange unnatural echo-like sound coloration, bass not as deep as competitors. Not technically a 360 speaker, only front and rear. Not very loud. Not really any different from the Emberton II except having the treble turned down a little bit.

AppYes
Aux InputNo
Bass Extension (-10dB)62Hz
Battery Life32 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.3
Built in MicrophoneYes
Digital Aux InputNo
Dimensions6.3" x 2.7" x 3" (160 x 68 x 76 mm)
Drivers2x 2" full-range cone drivers + 2x 2" passive radiators
EQYes (3 presets via app)
IP RatingIP67
OmnidirectionalYes
Output Power20W
Party ModeYes (Marshall Stack)
Power BankNo
Power InputUSB-C
StereoYes
TWSNo
Weight1.5 lbs / 673 g

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Ultimate Ears Wonderboom 2: $80 Amazon

Ultimate Ears Wonderboom 2 ranking card

Pros: IP67 rated and floats. Compact and light enough to toss in a bag.

Cons: Not stereo, barely any bass, recessed treble. Slightly boosted 93hz upper bass Dip at 9khz. 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 2019. Not technically a 360 speaker, only front and rear.

AppNo
Bass Extension (-10dB)82Hz
Battery Life12 hours (Manufacturer specified)
Bluetooth Version5.1
Built in MicrophoneNo
Digital Aux InputNo
Dimensions4.1" x 3.8" (104 x 95.3 mm)
Drivers2x 40mm active drivers + 2x passive radiators
EQNo
IP RatingIP67
Max Volume88dB
OmnidirectionalYes
Party ModeNo
Power InputMicro USB
StereoNo
TWSYes
Weight0.9 lbs / 420 g

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