Ultimate Ears Everboom vs Harman Kardon Onyx Studio 4

Last updated: August 19, 2026

Short answer: the Ultimate Ears Everboom for better sound quality, the Harman Kardon Onyx Studio 4 for the lower price. The Ultimate Ears Everboom ranks #32 of 77 large speakers at $149.99. The Harman Kardon Onyx Studio 4 ranks #47 at $100, $49.99 cheaper.

On the Ultimate Ears Everboom side: This speaker may move around as we get better sound samples. The tradeoff: Has an upper bass boost and is tuned warm with rolled off treble. Not very deep bass.

The case for the Harman Kardon Onyx Studio 4: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. Watch for: 8 hour battery at medium volume. Not at loud as others. Not as deep of bass as the newer Onyx.

Buy the Ultimate Ears Everboom if sound quality matters more than the price. Buy the Harman Kardon Onyx Studio 4 if the price matters more than sound quality.

If battery life is a priority, the Ultimate Ears Everboom is rated for 20 hours versus 8 hours for the Harman Kardon Onyx Studio 4.

If water resistance matters to you, the Ultimate Ears Everboom at IP67 (brief submersion) holds up far better than the Harman Kardon Onyx Studio 4 at no water resistance.

Ultimate Ears Everboom vs Harman Kardon Onyx Studio 4

Specifications Side By Side

Ultimate Ears Everboom Harman Kardon Onyx Studio 4
Price$149.99$100 Discontinued
Ranked#32 of 77 in Large Size Portable Bluetooth Speakers#47 of 77 in Large Size Portable Bluetooth Speakers
AppYesYes (HK Connect)
Battery Life20 hours (Manufacturer specified)8 hours (Manufacturer specified)
EQYesNo
IP RatingIP67None
Party ModeYes (PartyUp up to 50 speakers)Yes (Connect+ up to 100 speakers)
Power BankNoNo
Power InputUSB-CDC Barrel Connector (19V/2.1A)
StereoNoYes
OmnidirectionalYesNo
TWSNoYes
Weight2.1 lbs / 949 g4.5 lbs / 2.06 kg
Aux InputYesYes
Bluetooth CodecsSBCSBC
Built in MicrophoneYesYes
Bluetooth Version5.14.2
Dimensions8.1" x 3.3" x 4.3" (205 x 85 x 110 mm)11.4" x 11.4" x 5.1" (290 x 290 x 130 mm)
Drivers2x 56.6mm x 56.2mm fullrange transducers + 2x passive radiators2x 75mm woofers, 2x 20mm tweeters
Output Power14W60W
Digital Aux InputNoNo
Frequency Response-50Hz - 20kHz (Manufacturer specified)
Discontinued-Yes

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

The Two Speakers In Full

Ultimate Ears Everboom: $149.99 Amazon

Ultimate Ears Everboom ranking card

Pros: This speaker may move around as we get better sound samples

Cons: Has an upper bass boost and is tuned warm with rolled off treble. Not very deep bass.

AppYes
Aux InputYes
Battery Life20 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.1
Built in MicrophoneYes
Digital Aux InputNo
Dimensions8.1" x 3.3" x 4.3" (205 x 85 x 110 mm)
Drivers2x 56.6mm x 56.2mm fullrange transducers + 2x passive radiators
EQYes
IP RatingIP67
OmnidirectionalYes
Output Power14W
Party ModeYes (PartyUp up to 50 speakers)
Power BankNo
Power InputUSB-C
StereoNo
TWSNo
Weight2.1 lbs / 949 g

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Harman Kardon Onyx Studio 4: $100 Discontinued

Harman Kardon Onyx Studio 4 ranking card

Pros: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. Multi-host Bluetooth connectivity for 2 phones, daisy chaining up to 100 speakers. Elegant modern design with smooth curves and premium materials.

Cons: 8 hour battery at medium volume. Not at loud as others. Not as deep of bass as the newer Onyx. External AC power brick for charging. Discontinued.

AppYes (HK Connect)
Aux InputYes
Battery Life8 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version4.2
Built in MicrophoneYes
Digital Aux InputNo
Dimensions11.4" x 11.4" x 5.1" (290 x 290 x 130 mm)
DiscontinuedYes
Drivers2x 75mm woofers, 2x 20mm tweeters
EQNo
Frequency Response50Hz - 20kHz (Manufacturer specified)
IP RatingNone
OmnidirectionalNo
Output Power60W
Party ModeYes (Connect+ up to 100 speakers)
Power BankNo
Power InputDC Barrel Connector (19V/2.1A)
StereoYes
TWSYes
Weight4.5 lbs / 2.06 kg

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