The B&O Beosound A1 2nd gen is the safer compact outdoor speaker, while the KEF Muo gen2 offers stereo and a longer claimed battery. Both have IP67 protection, but the A1 is the louder model at 93dB and has a straightforward 58Hz bass limit rather than the KEF’s ambitious but less convincing low-end claim.
KEF improved the Muo’s treble balance and provides a racetrack woofer plus dedicated tweeter, but its review flags thuddy bass that distorts as volume rises and loses depth off-axis. The A1 is mono and its 18-hour battery trails KEF’s 24-hour claim, but it is the less compromised choice for consistent portable sound.
Buy the B&O Beosound A1 2nd gen for higher output and a more predictable compact-speaker balance.
Buy the KEF Muo gen2 for true stereo, longer battery life, and a larger-driver presentation at moderate volume.
Specifications Side By Side
| B&O Beosound A1 2nd gen | KEF Muo gen2 | |
|---|---|---|
| Price | $395.00 | $249.99 |
| Ranked | #10 of 142 in Medium Size Portable Bluetooth Speakers | #76 of 142 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | - |
| Bass Extension (-10dB) | 58Hz | - |
| Battery Life | 18 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built in Microphone | Yes | - |
| EQ | Yes | - |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 90ms | - |
| Max Volume | 93dB | 90dB |
| Power Bank | No | - |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Digital Aux Input | Yes (USB-C) | Yes (USB-C) |
| Weight | 1.2 lbs / 558 g | 1.6 lbs / 740 g |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive | SBC, aptX Adaptive up to 48 KHz 24 bit |
| Power Input | USB-C | - |
| Drivers | 3.5mm aluminium driver + 0.75 inch silk dome tweeter | 1x 58x117mm racetrack woofer, 1x 20mm tweeter |
| Party Mode | - | Yes (Auracast) |
| Bluetooth Version | - | 5.4 |
| Dimensions | - | 8.5" x 3.2" x 2.3" (216 x 82 x 59 mm) |
| Frequency Response | - | 43Hz - 20kHz (Manufacturer specified) |
| Output Power | - | 40W |
Related Speaker Comparisons
How B&O Beosound A1 2nd gen compares with other leading options:
- B&O Beosound A1 2nd gen vs Soundcore Motion 300
- B&O Beosound A1 2nd gen vs Soundcore Motion+
- Soundcore Boost “upgraded” 2021 vs B&O Beosound A1 2nd gen
- Denon Envaya DSB-250BT vs B&O Beosound A1 2nd gen
- Minirig 3 vs B&O Beosound A1 2nd gen
Prices on this page were last checked September 8, 2026 at 6:02 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
B&O Beosound A1 2nd gen: $395.00 Amazon eBay
Pros: B&O Beosound A1 2nd gen uses 3.5mm aluminium driver + 0.75 inch silk dome tweeter. Its 558 g, claimed 18 hours (Manufacturer specified) battery life, IP67 protection, up to 93dB and mono playback make it a practical option for its intended room or portable use.
Cons: Bass is limited by its 58Hz specification.
Full B&O Beosound A1 2nd gen review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 58Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive |
| Bluetooth Latency | 90ms |
| Built in Microphone | Yes |
| Digital Aux Input | Yes (USB-C) |
| Drivers | 3.5mm aluminium driver + 0.75 inch silk dome tweeter |
| EQ | Yes |
| IP Rating | IP67 |
| Max Volume | 93dB |
| Omnidirectional | Pointing up |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.2 lbs / 558 g |
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: B&O Beoplay/Beosound A1 - all 3 generations compared More from Oluv’Sone →
- JOY‘s 🎧3D🔈Audio-Show: B&O Beosound A1 3rd gen vs 2nd gen - worth the premium?
- Alan Ross Reviews: B&O Beoplay A1 2nd gen vs Minirig mk3 bluetooth speaker More from alanrossreviews →
- Alan Ross Reviews: B&O Beoplay A1 2nd gen vs Minirig mk3 bluetooth speaker
- Alan Ross Reviews: Soundcore Motion Plus vs Beoplay A1 2nd gen - The Match!
- techkiste.net: B&O Beosound A1 (2nd Gen) vs Bose Revolve 2 vs Bose Revolve+ 2 sound-comparison
- Oluv Patreon: B&O Beosound A1 2nd gen vs Beoplay A1 outdoors with a bit of Anker Soundcore Motion+ too
- Oluv Patreon: (Anker) Soundcore Motion 300 - first impressions
- Head-to-Head Comparisons
- B&O Beosound A1 2nd gen vs B&O Beosound A1
- B&O Beosound A1 2nd gen vs JBL Charge 6
- B&O Beosound A1 2nd gen vs JBL Flip 6
- B&O Beosound A1 2nd gen vs Minirig 3
- B&O Beosound A1 2nd gen vs Soundcore Boost “original model” pre-2021
- B&O Beosound A1 2nd gen vs JBL Flip 7
- B&O Beosound A1 2nd gen vs Denon Envaya DSB-250BT
- B&O Beosound A1 2nd gen vs Soundcore Boost “upgraded” 2021
- See all 23 comparisons
KEF Muo gen2: $249.99 Amazon eBay
Pros: KEF seemed to have fixed the rolled off treble and overall balance
Cons: Lacking deeper bass. Very thuddy bass. Appears to be the exact same hardware but with updated tuning. Bass distorts as volume increases, and the claimed 43Hz extension is really only audible at low listening volumes, with a few seconds of lag after volume changes. Loses most of its bass off-axis. Customer reviews are mixed, ranging from praise for detail at low volume to complaints of a boxy, hollow sound.
Full KEF Muo gen2 review and specifications →
| App | Yes |
|---|---|
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, aptX Adaptive up to 48 KHz 24 bit |
| Bluetooth Version | 5.4 |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 8.5" x 3.2" x 2.3" (216 x 82 x 59 mm) |
| Drivers | 1x 58x117mm racetrack woofer, 1x 20mm tweeter |
| Frequency Response | 43Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Max Volume | 90dB |
| Omnidirectional | No |
| Output Power | 40W |
| Party Mode | Yes (Auracast) |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.6 lbs / 740 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons