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

Inter-speaker connectivity was a major strength, with praise for Sonos grouping, Sound Swap, AirPlay-style extension and seamless ecosystem integration.

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.

Wi-Fi streaming and Sonos ecosystem integration were repeatedly described as reliable, seamless or central to the product's appeal.

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.

Power bank functionality was a limitation because the Roam 2 does not support reverse charging.

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.

Google support was a consistent weakness where mentioned, with reviewers noting that Google Assistant is no longer available.

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

Wired input was a clear limitation, with the USB-C port described as charging-only rather than an audio input.

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

The lack of a strap, loop or carry attachment was a repeated portability complaint despite the compact body.

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

Smart features were valued for synchronized Sonos playback, voice control and app-based service aggregation, especially inside an existing Sonos home.

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.

Dynamic headroom was limited at high volumes because processing can reduce bass and dynamics to avoid distortion.

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

Stereo pairing and multi-speaker pairing were praised when used through Wi-Fi, but Bluetooth-only pairing limitations kept this from being universally flexible.

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

Status indicators were a minor usability weakness, with reviewers wanting larger lights and a clearer battery indicator.

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

Battery life was the most common weakness: ten hours was enough for casual outings, but many reviewers said rivals last longer and that Sonos should have improved it.

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.

Weight and portability were consistently praised, with reviewers emphasizing that it is light, packable and easy to carry around the house or outdoors.

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.

Alexa and Sonos voice features were useful on Wi-Fi, but Alexa limitations and the absence of Google Assistant kept smart assistant support from being perfect.

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

Value for money was mixed: the Roam 2 felt worthwhile for Sonos users and premium sound seekers, but less compelling against cheaper or longer-lasting alternatives.

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.

EQ customization was useful but basic: reviewers liked bass and treble controls, while several wanted more than the simple two-band adjustment.

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

Water resistance earned strong praise, with reviewers reporting successful use around showers, beaches, dunking, splashes and rinsing.

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.

Durability was generally praised, including rough handling, beach use and accidental drops, though one review noted the lack of large rubber bumpers.

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

Voice and vocal reproduction was usually clear and warm, though at least one reviewer preferred a rival for clearer vocals.

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

App reliability was one of the most divided areas: some reviewers found it easy and useful, while others reported setup hurdles, dead controls or broader Sonos app frustrations.

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.

Microphone support was mixed: it enables voice features and Trueplay, but reviewers called out limitations around speakerphone use and Bluetooth mode.

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

Reviewers generally found the Roam 2 louder than its small size suggests, but several said it is not a true party speaker and can trail larger rivals outdoors.

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.

Dust resistance was praised mainly in outdoor and beach contexts, where reviewers valued the IP67 protection against sand and dirt.

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.

Detail retrieval split reviewers: many heard clear instrument separation, while more critical reviews said rivals reveal more nuance and subtlety.

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

Charging speed received limited but positive evidence, mainly around the newer USB-C cable helping the Roam 2 charge faster than its predecessor.

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.

Design and aesthetics were broadly praised as sleek, minimal, premium and packable, though one review found the matte black exterior prone to smudges and scratches.

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

High-volume behavior was mostly praised for staying clean, though some reviews noted performance limits or bass thinning when pushed hard.

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

On-device controls were praised for tactile playback, volume and grouping functions, especially because they remain usable around water or without relying on the app.

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.

Setup simplicity improved sharply for Bluetooth use, with many reviewers praising out-of-box pairing; Wi-Fi setup through the app was less consistent.

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

Price and value depended heavily on Sonos ecosystem use: reviewers saw the premium as justified for Sonos features but steep against cheaper Bluetooth rivals.

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

Cohesive presentation received direct praise for fullness and cohesion, especially in rock and hip-hop playback.

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

Energy-saving behavior was viewed positively through sleep and battery-conservation features that help preserve charge between uses.

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

Low-volume or moderate-volume listening drew positive evidence, with one reviewer not needing more than half volume indoors.

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

The new dedicated Bluetooth button and physical controls were widely praised for making pairing and daily use easier than the original Roam.

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

Everyday usability was strong thanks to compact size, easy Bluetooth pairing, physical controls and the ability to move between home and outdoor listening.

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

Stereo impressions were mixed: the Roam 2 itself is mono, but pairing two units over Wi-Fi can create noticeably better separation.

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

USB-C charging was generally positive, especially the included USB-C to USB-C cable, though one review criticized pricey wireless charging accessories rather than the port itself.

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

Cabinet and build construction were praised as metal, solid, rugged and premium for a compact portable speaker.

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

Sound balance was one of the Roam 2's strongest areas, with repeated praise for clear, full and balanced playback for its size, offset by some criticism of bass limits and refinement.

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.

Bluetooth stability was strong in hands-on testing, with reviewers reporting seamless switching or no dropouts over long use.

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

Bluetooth codec support was criticized as limited, with repeated notes that the speaker only supports SBC and AAC despite its premium price.

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

Speakerphone capability was a weak point because reviews noted that the Roam 2 cannot be used for phone calls or conference calls.

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

AirPlay support was treated as a useful advantage, especially for Apple users and multi-room playback, though most reviews mentioned it as part of the broader Wi-Fi feature set.

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

Backward compatibility was positive where mentioned, with the Roam 2 able to pair with the original Roam for stereo use.

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

Float capability was a clear drawback: reviewers liked the waterproofing but noted that it sinks unlike some outdoor rivals.

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

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

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.

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

Voice assistant responsiveness was a bright spot in positive reviews, especially Sonos Voice Control working hands-free and even over Bluetooth for basic commands.

Voice recognition was praised in the few reviews that tested Sonos Voice Control, with requests reportedly understood reliably.