Compare Bang & Olufsen Beosound A1 Speaker 3rd Gen vs Marshall Kilburn III Portable Bluetooth Speaker

The Bang & Olufsen app is widely praised as polished, stable and genuinely useful, with EQ, stereo setup, battery readouts and extra content. One review noted a radio feature hiccup.

The Marshall app is generally viewed as useful for EQ, placement compensation, and battery features, but there are reports of occasional pairing/setup friction and some early-stage quirks around broadcast features.

Battery life is one of its best features. The 24-hour claim is repeatedly praised and several reviewers found real-world endurance strong or even conservative at moderate volume.

Battery life is consistently described as class-leading around 50 hours, with several reviewers noting it lasts days to over a week in normal use and dramatically outclasses many rivals in this size.

AAC and aptX Adaptive support are appreciated, but Bluetooth 5.1 feels dated and the lack of Auracast comes up repeatedly as a missed opportunity.

Codec support is repeatedly called basic, commonly described as SBC/AAC (and LC3 in some coverage), with reviewers noting the absence of higher-end options like LDAC or aptX Adaptive.

Bluetooth stability is a strong point, with reviewers reporting dependable pairing and no meaningful dropouts in normal use.

Bluetooth stability is largely reported as solid and reliable, with few dropouts mentioned during typical use, though broadcast-style features are not always seamless depending on devices.

Bluetooth range is solid for normal portable use, roughly room-to-garden or around 10 meters, but nobody describes it as exceptional.

Reported range aligns with typical expectations for the class, with at least one review noting it can exceed the stated 10m in real home use.

Charging takes around three hours, which is acceptable but commonly described as leisurely or on the long side.

Charging is often cited as around three hours with an appropriate USB-C PD charger and includes quick-charge style benefits, but several notes warn slower chargers can dramatically extend charge time.

Its presentation is repeatedly described as composed, unified and together-sounding, with strong musical organization.

Overall presentation is consistently described as cohesive and engaging, with strong room-filling character and a tuning that works across many genres without falling apart at higher volumes.

Physical buttons are consistently described as clicky, positive and easy to use.

Button and control responsiveness is consistently described as satisfying and tactile, with several reviews calling out the premium feel of toggles, knobs, and playback controls.

Design is the headline feature. Nearly every review describes the A1 3rd Gen as beautiful, premium, luxurious and unusually desirable for a portable speaker.

Nearly every review highlights the signature Marshall amp-inspired look, premium materials, and tactile hardware controls as a major reason to buy, often calling it a statement piece for the home.

Detail retrieval is a major strength. Reviews repeatedly praise how much vocal texture, instrument separation and fine nuance it extracts for such a small speaker.

Detail is widely considered strong for a portable speaker, with good separation and clarity across genres, though some commentary suggests top-end nuance and precision can trail the very best competitors in ideal listening positions.

The A1 3rd Gen generally stays composed when pushed, with little change in character at high volume, though bass-heavy tracks and resonant surfaces can expose some strain or boom.

Reviews frequently praise how well it controls distortion at higher volumes, with dynamic loudness and tuning keeping the sound from getting harsh or breaking up when pushed.

Build quality is excellent, but the aluminum finish can scuff and reviewers are less comfortable throwing it around than a rugged JBL-style speaker.

Build is often described as tank-like and sturdy, with reviewers suggesting it should handle everyday knocks and occasional falls better than many plastic-bodied competitors.

Dust resistance is tied to the IP54 rating and is framed as adequate for everyday outdoor use (patios, parks), but not a fully rugged, sand-and-submersion type rating.

It handles dynamic swings capably for a small portable, but several reviews say larger or cheaper rivals still sound more explosive.

Dynamic headroom is repeatedly credited for keeping the sound energetic and controlled as volume changes, helping preserve detail and balance at both moderate and loud listening levels.

One detailed review highlights major efficiency gains enabling very long playtime from only modest battery capacity growth, suggesting strong power management for the class.

EQ customization is one of the best parts of the experience. The preset system and visual sound control are intuitive, effective and unusually enjoyable to use.

EQ flexibility is frequently praised: users can tweak bass/treble with physical knobs and use app-based presets plus a multi-band EQ, with shortcuts like an M button for quick switching.

Its tonal balance is warm, rich and polished rather than strictly neutral, with standout mids and vocals, controlled bass and smooth highs. Some listeners wanted more treble bite or deeper sub-bass.

Most coverage describes a lively, warm-leaning balance with strong bass and clear mids, though a few notes mention it can sound a bit bass-forward or have occasional mid/treble character that some listeners may want to EQ.

The leather strap looks and feels premium and makes carrying or hanging the speaker easy.

The carry strap/handle is frequently praised for comfort and security, making the speaker easier to move around than some similarly heavy rivals.

It gets impressively loud for a compact speaker and can fill a room or hotel space, but it is not the brute-force outdoor party option and some reviewers wanted more outright volume for the price.

The Kilburn III is repeatedly described as very loud for its class and capable of powering outdoor hangs or parties, with enough headroom to feel big in larger rooms.

Low-volume listening is reported to stay rich and satisfying, helped by dynamic loudness behavior that avoids losing bass and body when playing quietly.

Stereo pairing is a genuine strength. Reviews say it is easy to set up and useful in practice, including pairing with a 2nd-gen A1 in several cases.

A frequent downside is the lack of native stereo pairing or a built-in multi-speaker ecosystem; Auracast is discussed as a workaround, but it depends on compatible sources and is not universally smooth yet.

Multipoint support is a real plus and reviewers found switching between two devices simple and reliable.

Multipoint capability is referenced as available in some coverage, supporting quick switching or pairing to two devices, though it is not the primary focus of most reviews.

Sound disperses broadly and works well for room or table listening, though not every reviewer agrees it is truly 360-degree audio.

Multiple reviewers confirm the 360-style presentation works well, maintaining a full sound as you move around the speaker, though a few describe it as not perfectly wraparound like some cylindrical rivals.

On-device controls are repeatedly praised as a major strength: tactile knobs, dedicated playback control, and shortcut buttons reduce reliance on the app and are easy for anyone to use.

Power bank use is a highlighted perk, letting you charge a phone from the speaker, with at least one review noting you should pay attention to charge direction behavior depending on speaker power state.

Pairing and setup are straightforward, helped by Fast Pair or Swift Pair support and a clean companion app.

Setup is typically described as straightforward with fast pairing behavior, and most reviewers report stable day-to-day use once connected.

Gen 3 drops Alexa entirely, which reduces smart-speaker appeal versus Gen 2, even if several reviewers said they did not miss it.

Smart features are intentionally limited: reviews repeatedly note no Wi-Fi streaming and no voice assistant, with the app focused on sound shaping, placement compensation, and battery management.

Speakerphone performance is generally good, with clear calls and solid voice pickup, though some reviewers heard slightly processed edges to voices.

Several reviews explicitly note the lack of a built-in microphone, meaning it is not a good choice if you want speakerphone or hands-free calling features.

The status LEDs work, but they are fairly subtle, and a couple of reviewers wanted them larger or more obvious.

Status feedback is frequently described as strong, including battery indication and LED/indicator behavior around physical knobs that makes quick adjustments easy without looking at a phone.

Reviews commonly note it is stereo only in a technical sense; the footprint feels wide, but true left-right separation and pinpoint imaging are limited compared to dedicated stereo pairs.

No summary yet.

Sustainability stands out for the category thanks to repairability, a replaceable battery and Cradle to Cradle certification.

Replaceable battery access and longevity features are repeatedly framed as a sustainability win, helping extend the usable life of the speaker compared to sealed-battery designs.

USB-C charging is broadly praised as convenient and modern, with some reviews noting the lack of an included high-wattage adapter as a small annoyance.

Value for money is the most debated part of the A1 3rd Gen. Many think the sound, materials and longevity justify the premium, but value-minded reviewers still see better sound-per-dollar from cheaper JBL and other larger rivals.

Value is generally considered good for buyers prioritizing design, battery, and big sound, but some reviewers still flag the price as premium given the lack of Wi-Fi, voice features, and stereo pairing.

Its IP67 rating is consistently treated as trustworthy for poolside, shower and beach use, and several reviewers mention quick dunk-style tests without issue.

IP54 protection is generally seen as a welcome upgrade that handles splashes and light rain, but many reviewers still call it less rugged than IP67-style competitors for serious outdoor abuse.

It is portable enough for bags and travel, with reassuring heft, but it is not featherlight or pocket-sized.

Multiple reviews call it heavy for true travel or backpack use, though the strap helps and most position it as portable around home, yard, or short trips rather than hiking gear.

USB-C works for both charging and wired audio, giving the A1 more flexibility than many Bluetooth-only rivals. USB-C wired playback is more than a checkbox feature. Reviews that tried it reported extra clarity, punch and definition compared with Bluetooth.

Reviews commonly note the presence of a 3.5mm AUX input as a useful fallback for wired listening and for sources that can benefit from a cable connection. Wired AUX use is generally described as a good alternative path for quality listening, with at least one review noting the signal still goes through internal processing rather than staying purely analog end-to-end.