Sonos Roam 2 vs Ultimate Ears Boom 4

Last updated: August 20, 2026

Short answer: the Sonos Roam 2 for better sound quality, the Ultimate Ears Boom 4 for the lower price. The Sonos Roam 2 ranks #71 of 136 medium speakers at $177. The Ultimate Ears Boom 4 ranks #88 at $105, $72 cheaper.

What the Sonos Roam 2 offers: Very neutral. Additional button for pairing instead of being shared with power button. Set against that: Exact same sound quality as the original Roam.

The case for the Ultimate Ears Boom 4: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. The catch: Not much improvement over the old ones.

Buy the Sonos Roam 2 if sound quality matters more than the price. Buy the Ultimate Ears Boom 4 if the price matters more than sound quality.

If battery life is a priority, the Ultimate Ears Boom 4 is rated for 15 hours versus 10 hours for the Sonos Roam 2.

Buy the Sonos Roam 2 at Amazon ($177.00) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

Sonos Roam 2 vs Ultimate Ears Boom 4

Specifications Side By Side

Sonos Roam 2 Ultimate Ears Boom 4
Price$177.00$105
Ranked#71 of 136 in Medium Size Portable Bluetooth Speakers#88 of 136 in Medium Size Portable Bluetooth Speakers
Bass Extension (-10dB)63Hz-
Battery Life10 hours (Manufacturer specified)15 hours (Manufacturer specified)
StereoNoYes
OmnidirectionalNoNo
Weight0.9 lbs / 429 g1.4 lbs / 620 g
WifiYes-
Bluetooth Version5.25.1
Dimensions2.4" x 6.6" x 2.4" (62 x 168 x 60 mm)7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
AppSonos S2 AppYes
Bluetooth CodecsSBC, AAC-
Built in MicrophoneYesNo
EQYes (via app, limited in Bluetooth mode)Yes (via app)
Drivers1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
IP RatingIPX5IP67
Max Volume95dB85dBC
Digital Aux InputNoNo
Power Input-USB-C
TWS-Yes
Power Bank-No
Aux Input-No
Buy the Sonos Roam 2 at Amazon ($177.00) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

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

The Two Speakers In Full

Sonos Roam 2: $177.00 Amazon

Sonos Roam 2 ranking card

Pros: Very neutral. Additional button for pairing instead of being shared with power button

Cons: Exact same sound quality as the original Roam. Bass extension isn’t very good. Not stereo. Gets distorted as you turn up the bass.

Full Sonos Roam 2 review and specifications →

AppSonos S2 App
Bass Extension (-10dB)63Hz
Battery Life10 hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC
Bluetooth Version5.2
Built in MicrophoneYes
Digital Aux InputNo
Dimensions2.4" x 6.6" x 2.4" (62 x 168 x 60 mm)
Drivers1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators
EQYes (via app, limited in Bluetooth mode)
IP RatingIPX5
Max Volume95dB
OmnidirectionalNo
StereoNo
Weight0.9 lbs / 429 g
WifiYes
Check current price at Amazon ($177.00) →Search eBay for Sonos Roam 2 →

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

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.