Sonos Roam vs Ultimate Ears WONDERBOOM 4

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Roam compared with WONDERBOOM 4

	SonosRoam	Ultimate EarsWONDERBOOM 4
Overview
Released
Released	April 2021	June 2024
Sound
Type
Type	Portable speaker	Portable speaker
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	One custom racetrack mid-woofer and one tweeter	Two 40 mm active drivers and two 46.1 × 65.2 mm passive radiators; 360° sound; maximum sound level 86 dBC (normal) or 87 dBC (Outdoor Boost)
Amplifiers
Amplifiers	Two Class-H digital amplifiers	–
Room tuning
Room tuning	Automatic Trueplay adjusts for orientation, location and content over Wi-Fi and Bluetooth; microphone must be enabled	Outdoor Boost; podcast EQ mode
Connections
Wi-Fi
Wi-Fi	Yes	No
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	Yes	No
Voice assistants
Voice assistants	Alexa, Google Assistant and Sonos Voice Control	None
Wi-Fi
Wi-Fi	802.11a/b/g/n/ac on 2.4 or 5 GHz; maker launch fact sheet omits 802.11a from this list	–
Bluetooth
Bluetooth	Audio streaming; original and later colour fact sheets specify Bluetooth 5.0, while the current maker guide lists 5.3	Bluetooth (version not published); 40 m range; connects to two source devices at once
Ports
Ports	USB-C charging; no analogue audio input (TechRadar)	USB-C for charging
Streaming
Streaming	Sonos app services, Sonos Radio and AirPlay 2 over Wi-Fi; Bluetooth playback can be grouped with other Sonos speakers through the Wi-Fi system	–
Multi-room
Multi-room	Sonos multi-room playback, stereo pairing with another Roam and Sound Swap to transfer music to or from a nearby Sonos speaker; cannot serve as rear cinema speakers (TechRadar)	Pairs with a second WONDERBOOM 4, as a double-up or a left and right stereo pair
App
App	Sonos S2 app for setup; original model requires Wi-Fi setup before Bluetooth pairing (TechRadar)	–
Design
Battery life (maker's claim)
Battery life (maker's claim)	Up to 10 hours	Up to 14 hours
Water and dust resistance
Water and dust resistance	IP67	IP67
Weight
Weight	0.43 kg	0.42 kg (better)
Battery life detail
Battery life detail	Maker claims up to 10 hours of continuous playback; USB-C charging with a 7.5 W minimum adaptor, 10 W recommended in the guide; Qi or optional Sonos wireless charger. Guide specifies 18 Wh and 0–50% in one hour wired or two hours wirelessly	Up to 14 hours; charges over USB-C (cable not included)
Mounting
Mounting	–	Bungee loop attached
Controls
Controls	Volume +/–, play/pause and microphone buttons; double-press playback for next track, triple-press for previous; hold for grouping and Sound Swap; shared rear power/Bluetooth button	–
Microphones
Microphones	Far-field microphone array with beamforming and multi-channel echo cancellation	–
Size
Size	168 mm high, 62 mm wide, 60 mm deep	104 mm tall, 95.3 mm wide
Colours
Colours	Shadow Black and Lunar White at launch; Olive, Wave and Sunset added in 2022	Active Black, Cobalt Blue (Ultimate Ears UK gallery)
In the box
In the box	Sonos Roam, USB-A to USB-C cable, quick-start documentation; no power adaptor	WONDERBOOM 4 with attached bungee