Compare Marshall Willen II vs Ultimate Ears Wonderboom 4 Speaker

Reviewers found the Marshall app usable but bare-bones, with limited controls and few reasons to spend time in it beyond updates, battery information, and presets.

App support was one of the weaker areas: reviewers noted that Boom app support was missing or limited, reducing EQ and remote-control options.

Two reviews noted the lack of high-resolution audio support, while also treating it as a modest limitation for a speaker this small.

Backwards compatibility was weakly reviewed because the lack of wired audio makes the speaker less useful with older playback devices.

Backward and cross-generation pairing evidence was positive, with reviewers noting Wonderboom 3 and 4 units can pair for stereo sound.

Battery life was one of the strongest areas, with reviewers reporting or praising roughly 14 to 17 hours and calling it enough for trips, weekends, or long workdays.

Battery life was consistently positive, with reviewers generally confirming or exceeding the 14-hour claim and calling it enough for regular portable use.

Codec support was limited; reviewers noted SBC-only or no hi-res codec support, while also framing that as typical for this class.

Connection stability drew strong praise where tested, including stable connections, no cutouts nearby, and unusually strong connectivity in one long-range review.

Bluetooth stability was mostly strong, with reviewers noting stable or drop-free connections, although one reviewer experienced Samsung phone audio cutouts.

Bluetooth pairing and connection speed were praised as quick, painless, and remarkable in the reviews that evaluated the connection experience.

Bluetooth range was praised, with one reviewer calling it the most they had encountered and another describing the rated range as very strong.

Bluetooth range was viewed positively, with reviewers citing long-range performance and enough distance for normal portable use.

Build quality was consistently strong, with reviewers describing the speaker as robust, rugged, premium-feeling, and durable enough for everyday portable use.

Build construction was highly rated, with reviewers describing the package as well constructed, solid, durable, and premium-feeling for a small speaker.

Quick charging was repeatedly praised, especially the roughly 20-minute top-up that gives several more hours of playback.

Charging time was mixed: one reviewer saw the 2.5-hour recharge as acceptable, while another complained that topping up takes a while without fast charging.

Reviewers often characterized the sound as clean, balanced, warm, and accurate, though that balance sometimes came at the expense of raw loudness or bass punch.

The overall presentation was praised as balanced, clean, and surprisingly complete, with reviewers describing the soundstage and general output as cohesive for the size.

The joystick control was widely liked for feeling intuitive, solid, and easier than typical button combinations on small speakers.

Control responsiveness was mostly positive thanks to easy-to-press physical buttons, although one review noted a slight learning curve with the unmarked top controls.

Design was one of the most consistent strengths, with reviewers praising the retro Marshall look, premium texture, compact form, and rock-inspired styling.

The design was liked for its simplicity, with the physical layout reducing the chance of pressing the wrong button.

Detail retrieval was praised for a speaker this size, especially in close listening, vocals, instruments, and more complex material.

Detail retrieval was stronger than expected for the size, with reviewers hearing separation, production details, and consistency across complex tracks.

Most reviewers found distortion controlled for the size, but one noted noticeable tinny distortion when the volume was fully cranked.

High-volume performance was mixed: several reviewers heard harshness, strain, or collapsing sound at the top end, while two found distortion well controlled even near maximum volume.

Only one review gave direct drop-related experience, reporting that a drop did not break the speaker while still advising care around the accents.

Durability was a major strength, with reviewers repeatedly calling the speaker rugged, drop-proof, and able to handle rough portable use.

Dust resistance was treated positively when tied to outdoor use, with reviewers describing the IP-rated design as helpful for adventures and outdoor handling.

Dust resistance was positively framed as part of the speaker’s top-tier IP67 outdoor protection.

Dynamic headroom was moderately positive in one review, which found the speaker could handle complex tracks at higher volumes despite some distortion caveats.

EQ customization was a common limitation: reviewers liked having presets but criticized the lack of a full custom equalizer and found some modes less useful.

EQ customization was a recurring weakness: reviewers criticized missing app EQ, limited modes, and Outdoor/Podcast settings that often hurt sound quality or felt unnecessary.

Everyday usability was strong thanks to compact travel convenience, the stand-up form, ruggedness, and a clean design that works well on the move.

Everyday usability was strong because reviewers repeatedly described the speaker as simple, rugged, portable, and convenient for daily and outdoor use.

Float capability was useful around pools and beaches, but reviewers noted limitations: it may not play properly while floating and can tip over in water.

Frequency balance was widely praised as flat, accurate, warm, and clear, though the tuning prioritizes balance more than heavy bass output.

Most reviewers praised the tonal balance, noting punchy bass, clear mids and highs, and a sound profile that feels unusually full for a small speaker.

Google Fast Pair was praised in one Android-focused review because pairing with a Pixel phone happened instantly.

The rear strap was often praised for flexibility and outdoor convenience, but two reviewers felt it was flimsier or more delicate than the otherwise rugged body.

The strap drew criticism in one review, where it was described as not especially useful.

Inter-speaker connectivity was mixed: Auracast was seen as promising, but some reviews emphasized that the feature was not active or should not be counted on yet.

Inter-speaker connectivity was praised for stereo pairing, louder playback, and added detail when using two Wonderboom speakers.

Loudness split reviewers: some found it strong enough for small rooms, campsites, and groups, while others called it quiet or not award-worthy for volume.

Reviewers generally found the Wonderboom 4 surprisingly loud for its compact size, with enough output for rooms and casual outdoor use, though one reviewer said it is not suitable for truly large groups.

Low-volume performance was praised by one reviewer who valued that the speaker can get impressively quiet as well as loud.

The built-in microphone was valued as a useful call feature on a compact speaker, though reviews did not deeply assess microphone audio quality.

The microphone was a clear limitation because reviewers noted there is no mic for phone calls.

Multi-speaker pairing inspired low confidence because reviewers noted inactive Auracast support and warned against buying the speaker for future pairing promises.

Multipoint support was treated as a nice extra where mentioned, with the speaker able to remember multiple devices and use two at a time.

Multipoint support was treated as convenient, especially for switching between two devices or shared listening.

Omnidirectional performance was a weakness compared with 360-degree rivals, and one reviewer noted the experience changes depending on placement and listening angle.

Omnidirectional sound was a major strength, with reviewers praising the 360-degree output and the freedom from careful speaker positioning.

On-device controls were a clear strength, especially the Marshall joystick for playback, volume, and track changes.

On-device controls were praised as simple, obvious, and satisfying, especially the large volume buttons and straightforward playback controls.

One comparison review treated the missing power-bank function as a drawback against the Soundcore alternative.

Price/value opinions were mixed: some reviewers called it worth the premium or an excellent value, while others felt it was expensive for the output.

Price/value was mixed: reviewers praised the sub-$100 value and overall performance, but several questioned the upgrade value versus discounted older models.

Remote usability was weak because one reviewer specifically noted that the speaker cannot be turned on or off remotely.

Setup and pairing were praised as straightforward, with Bluetooth pairing described as quick, painless, and self-explanatory.

Setup was praised as very simple across reviews, including quick Bluetooth pairing and no app-required hoops.

Smart features were limited: reviewers acknowledged useful extras, but one summed up the package as not feature-packed.

Status indicators were praised in one review for making remaining battery power easy to judge directly on the speaker.

The battery/status light was viewed as useful because it makes it clear when the speaker needs recharging.

Stereo imaging evidence was positive in one review, which described paired Wonderboom speakers as proper two-channel left/right audio.

Sustainability received modest positive comments for recycled plastic and recycled fabric materials.

USB-C charging was widely welcomed as a practical upgrade from MicroUSB and one of the clearest improvements over the previous model.

Overall value was disputed, ranging from excellent value and worth-the-money praise to concerns that cheaper rivals offer more output or stronger feature sets.

Separate value judgments were favorable, with reviewers calling the speaker a good buy or a strong value when factoring in sound, build, and durability.

Voice and vocal clarity were repeatedly praised, with reviewers describing vocals as crystal clear, crisp, and easy to hear.

Voice clarity was useful in Podcast Mode for some reviewers, but one found the same mode made audiobook voices thin and less expressive.

Water resistance was strongly praised for outdoor and poolside use, with reviewers saying the IP-rated body makes the speaker easier to take anywhere.

Water resistance was praised as a practical outdoor strength, with reviewers pointing to IP67 protection and use around showers, pools, and beaches.

Most reviewers found the weight acceptable for travel and outdoor use, though one noted the speaker has noticeable heft for its small size.

Portability was a consistent strength, with reviewers praising the light weight, bag-friendly size, and easy carry for hikes, camping, and travel.

Wired input was a clear weakness: reviewers noted there is no wired audio or AUX input, limiting use with older or wired-only devices.

Reviewers treated the lack of a wired input as a clear limitation for anyone who wants to hard-wire an audio source.