Compare Sonos Move 2 Portable Speaker vs Marshall Kilburn III Portable Bluetooth Speaker

AirPlay 2 was treated as a meaningful plus for Apple users and Sonos multi-room setups.

App feedback was split: PCMag and some users found Sonos integration smooth, while others complained about unintuitive navigation, heavy app dependence, bugs, or setup errors.

App impressions are mostly positive when the Marshall app works, with useful EQ and firmware support, but one review had trouble finalizing the Kilburn III connection.

Audio format support is a limitation because reviewers point to missing USB Audio and missing hi-res Bluetooth codec support.

Backwards compatibility was criticized because a Move Gen 1 cannot stereo-pair with a Move 2.

Battery life received very strong agreement, with many reviewers confirming or praising the jump to roughly 24 hours.

Reviewers strongly agree battery life is a standout, repeatedly praising the 50-hour claim and multi-day real-world stamina, with one test reporting about 25 hours at moderate volume.

Bluetooth codec support was a consistent limitation, with reviewers noting the lack of higher-res or Android-friendly codecs.

Codec support is consistently treated as a limitation because reviewers note the lack of higher-resolution Bluetooth options such as LDAC or aptX Adaptive.

Bluetooth stability was generally strong in tested use, with reviewers reporting easy pairing and no unexpected disconnects.

Bluetooth setup and stability are praised in the reviews that evaluate it, including easy pairing, a solid connection, and a simple pairing process.

The only opinionated range test is positive, with one reviewer saying the speaker exceeded the stated 10-meter range around the house.

Build quality is widely praised as solid, durable, and premium, with reviewers highlighting the substantial cabinet feel and sturdy hardware.

Charging feedback was mixed: the dock and recharge experience were often convenient, but one reviewer complained that charging took ages.

Charging is mixed: quick-charge support is appreciated, but reviewers also note three-hour full charges, much slower charging with weak adapters, and slower charging while playing music.

A reviewer called out the lack of cast support as a downside for Android-oriented users.

The overall presentation was enjoyable and balanced for several reviewers, though one found the sound somewhat boxy.

Across reviews, the Kilburn III is repeatedly described as energetic, room-filling, cohesive, and able to handle a wide variety of music well.

Control responsiveness and the revised volume slider were widely liked, with reviewers calling the controls nice, precise, and easy to use.

Physical controls are a major strength, with reviewers praising the knobs, switches, tactile buttons, and upgraded control layout.

Design and aesthetics were strong positives, with reviewers praising the sleek, premium, minimalist look and build quality.

Design is one of the strongest consensus points, with reviewers repeatedly praising the retro Marshall aesthetic, premium detailing, and statement-piece presence.

Detail retrieval was often praised, with reviewers highlighting crisp bass notes, tighter drums, and clearer high-end details; one noted upper-register limitations.

Detail retrieval is mostly praised for clarity and instrumental texture, though one review notes a small loss of upper-mid detail.

High-volume behavior was mixed: reviewers reported bass clipping, reduced bass, or clipped dynamics as volume rose.

High-volume distortion control earns strong praise, with reviewers repeatedly saying the speaker stays clean or distortion-free when pushed loud.

Drop durability was generally positive, with reviewers describing ruggedness, surviving falls, and not feeling fragile, though cosmetic damage remained possible.

Drop resistance receives limited support from one reviewer who did not test drops but judged the build likely to survive minor falls.

Dust resistance was only lightly evaluated, with one reviewer calling the IP56 rating decent.

Dust resistance is generally seen as improved and useful for sand, dirt, and outdoor use, though the IP54 rating is not framed as fully rugged.

Dynamic headroom was a strength at moderate to high listening levels, with reviewers noting solid volume headroom and maintained dynamics until limits were reached.

Dynamic headroom is praised through reports of large-room output, energetic sound, and plenty of extra volume without losing control.

Energy efficiency was positively evaluated by one reviewer who said testing supported Sonos' efficiency claim.

Energy efficiency is supported by one review's observation that the major runtime gain comes from surprisingly small battery-capacity growth.

EQ customization was useful but limited, with reviewers praising treble/loudness adjustments while noting the EQ only covers basics.

EQ customization is a clear strength, combining responsive bass/treble knobs with app presets, five-band EQ, placement compensation, and M-button customization.

Everyday usability was praised for flexible home, yard, and room-to-room use, especially within an existing Sonos setup.

Everyday usability is praised because the analog controls are intuitive, easy to live with, and accessible to users without a learning curve.

Sound balance was one of the strongest themes, with reviewers praising rich bass, clear highs, and balanced tuning while a few wanted more upper-mid clarity.

Frequency balance is mostly praised for tight bass, clear mids, and lively highs, though a few reviews find it somewhat bassy or middy in places.

Reviewers repeatedly criticized the absence of Google Assistant or Google-style casting support.

Google Fast Pair receives limited but positive mention as a useful setup convenience.

The integrated handle usually helped with room-to-room carrying, though some reviewers wanted a more balanced or conventional handle.

The handle and strap are repeatedly praised as comfortable, secure, stylish, and helpful for moving a relatively heavy speaker.

Home theater integration was mixed: one reviewer liked sharing soundbar audio to Move 2, while others criticized the lack of rear-speaker support.

Home theater integration is speculative but positive in one review, which notes potential use as Bluetooth surround speakers with compatible Marshall soundbars.

Pairing two Move 2 units was described as the route to a more convincing stereo setup.

Inter-speaker connectivity is a repeated weakness because reviewers criticize the lack of built-in multi-speaker systems, stereo pairing, or reliable Auracast-style pairing.

One reviewer reported line-in/Bluetooth use with no delay, supporting low latency for that tested use case.

Reviewers generally found the Move 2 loud for rooms, patios, and outdoor spaces, though one noted it is not a true party-volume boombox without compromises.

Maximum loudness is a major strength, with reviewers describing it as loud, room-filling, party-ready, and in some cases too loud for an apartment.

One reviewer specifically liked the mellow default tuning for low-volume background listening.

Low-volume performance is praised in the limited evidence available, especially for keeping richness, separation, and bass at modest listening levels.

The far-field microphone was praised for picking up sound well for voice control and Trueplay.

Microphone support is a weakness because reviewers explicitly point out the lack of a built-in mic or speakerphone capability.

Multi-speaker pairing was useful when it worked over Wi-Fi, but reviewers flagged limits such as no Bluetooth stereo pairing and frustrating pairing restrictions.

Multi-speaker pairing reliability is a weakness, with several reviewers criticizing missing stereo pairing, missing multi-speaker pairing, or glitchy connection behavior.

Omnidirectional sound is widely praised, with reviewers describing clear sound at every angle, no dead spots, and useful 360-degree coverage.

On-device controls were mostly praised for responsiveness and convenience, but visibility outdoors drew one criticism.

On-device controls are one of the most praised usability features, especially the tactile knobs, playback toggle, power switch, and direct adjustments without relying on the app.

Power-bank functionality was repeatedly praised as handy for phones, camping, tailgating, and on-the-go use.

The power-bank function is treated as a useful bonus, though one reviewer warns that charge direction can be confusing when the speaker is off.

Price was the most repeated value concern, as reviewers liked the speaker but often called it expensive or hard to justify.

Price/value is mixed-positive: reviewers call it expensive or pricier than predecessors, but many say the sound, features, and upgrades justify the cost.

Privacy feedback was polarized: hardware mic controls earned praise, but one reviewer strongly disliked the need to keep mics live for some features.

Setup ranged from easy and smooth to frustrating, with one reviewer reporting a long error-filled setup process.

Setup simplicity gets limited but strong praise, mainly through Google Fast Pair and straightforward Bluetooth pairing.

Alexa and Sonos Voice Control were considered useful and easy to set up by reviewers who tested them.

Smart assistant integration is weak because multiple reviews explicitly note the absence of voice assistants or voice control.

Smart features were viewed as broad and useful, especially Sonos ecosystem expansion, voice control, and smart-home integration.

Smart features are limited overall; reviewers note the lack of Wi-Fi, voice control, and broader smart-speaker functions, though the simple music-first approach appeals to some.

Speakerphone quality cannot be praised because reviewers note the speaker lacks the built-in mic needed for hands-free calling.

Spotify Connect was praised as a favorite convenience feature by one reviewer.

One reviewer criticized the lack of a clear on/off notification or status feedback.

Status indicators are praised where discussed, especially the battery gauge and illuminated knob markers.

Reviewers agreed the dual-tweeter design widens the presentation versus many single speakers, but several said the stereo effect is still limited from one enclosure.

Stereo imaging is mixed: reviewers like the wide and immersive presentation, but some note limited true stereo separation or asymmetry.

Bass/subwoofer performance is strongly praised for resonance, rumble, and control, though some listeners may want to dial it down.

Surround-style presentation is limited; the speaker creates an immersive wide field, but reviewers caution it is not true surround sound.

Replaceable battery and serviceability were treated as sustainability positives and a way to extend the speaker's life.

Sustainability has limited mixed support through the replaceable battery compartment, with uncertainty about replacement-battery availability.

USB-C charging and connectivity were treated as useful additions, especially combined with power-bank support.

USB-C support is praised for modern charging, fast-charging compatibility, and external-device charging, with some caveats around charger requirements.

Overall value depended heavily on portability needs; reviewers saw the premium as reasonable for flexibility but weak if the speaker stays put.

Value for money is mostly positive because reviewers often say the price is justified by sound, battery life, design, and upgrades, though one finds better value elsewhere.

Voice assistant responsiveness was mixed to weak, with reviewers noting annoyances and delayed playback after commands.

One reviewer found vocals somewhat veiled before EQ adjustment, making voice clarity acceptable but not ideal by default.

Vocal clarity is praised in music playback, with reviewers calling vocals clear, crisp, forward, textured, and easy to hear in dense mixes.

One reviewer praised the far-field mics as working very well for voice control.

Water resistance was viewed as good enough for rain, splashes, showers, and outdoor use, but reviewers noted it is not fully waterproof or submersible.

Water resistance is mixed: IP54 is a meaningful improvement for splashes and rain, but reviewers repeatedly caution that it is not beach-rugged or IP67-level protection.

Weight was one of the clearest drawbacks: reviewers repeatedly described it as heavy, bulky, or not backpack-portable.

Weight convenience is mixed: reviewers appreciate the strap and manageable carry feel, but repeatedly say it is hefty, backpack-unfriendly, or better for home/garden use.

Wi-Fi playback drew positive marks, with reviewers describing smooth, reliable streaming and clean handoff back to Wi-Fi.

Wi-Fi streaming is a weakness because reviewers note there is no Wi-Fi connection and say its absence is a shame at this price.

The USB-C line-in option was praised for adding versatility, especially for turntables and other external sources.

Wired input receives limited positive support, with one reviewer calling the aux input a good alternative to missing high-quality wireless audio options.