Marshall Willen II vs Ultimate Ears WONDERBOOM 4

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Willen II compared with WONDERBOOM 4

	MarshallWillen II	Ultimate EarsWONDERBOOM 4
Overview
Released
Released	August 2024	June 2024
Sound
Type
Type	Portable speaker	Portable speaker
Channels
Channels	Mono	–
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	One 2-inch 10 W full-range dynamic driver and two passive radiators, in a sealed cabinet	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)
Room tuning
Room tuning	–	Outdoor Boost; podcast EQ mode
Amplifiers
Amplifiers	38 W class D	–
Frequency response
Frequency response	75 Hz – 20 kHz; up to 88 dB SPL at 1 m	–
Connections
Wi-Fi
Wi-Fi	No	No
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	No	No
Voice assistants
Voice assistants	None	None
Bluetooth
Bluetooth	Bluetooth 5.3, LE Audio-ready; up to 100 m range in free field; connects to two devices at once and remembers eight	Bluetooth (version not published); 40 m range; connects to two source devices at once
Ports
Ports	USB-C for charging (5 V, 1.5 A)	USB-C for charging
Multi-room
Multi-room	–	Pairs with a second WONDERBOOM 4, as a double-up or a left and right stereo pair
App
App	Marshall Bluetooth app (iOS and Android)	–
Design
Battery life (maker's claim)
Battery life (maker's claim)	Up to 17 hours	Up to 14 hours
Water and dust resistance
Water and dust resistance	IP67	IP67
Weight
Weight	0.36 kg (better)	0.42 kg
Battery life detail
Battery life detail	Over 17 hours; 2.5 hours to charge; 20 minutes of charging gives 5.5 hours	Up to 14 hours; charges over USB-C (cable not included)
Controls
Controls	Multi-directional control knob, power and Bluetooth buttons; battery indicator	–
Microphones
Microphones	Built-in microphone for hands-free calls	–
Mounting
Mounting	Removable fastening strap	Bungee loop attached
Size
Size	100.5 × 100.5 × 43.4 mm (W × H × D)	104 mm tall, 95.3 mm wide
Colours
Colours	Black and Brass, Cream	Active Black, Cobalt Blue (Ultimate Ears UK gallery)
In the box
In the box	Willen II, USB-C cable, user manual and legal and safety information	WONDERBOOM 4 with attached bungee