Yeahbox Sonic Boom Ultra vs B&O Beolit 20

Q: Which is better, the Yeahbox Sonic Boom Ultra or the B&O Beolit 20?

Short answer: the Yeahbox Sonic Boom Ultra. It ranks #10 of 75 boombox speakers by sound quality at $349.20; the B&O Beolit 20 ranks #33 and costs $599.99, so there is not much of a tradeoff to weigh.

Q: Should I buy the Yeahbox Sonic Boom Ultra or the B&O Beolit 20?

Buy the Yeahbox Sonic Boom Ultra. It ranks higher for sound quality than the B&O Beolit 20 and costs less, so there is no real case for the other one.

Short answer: the Yeahbox Sonic Boom Ultra. It ranks #10 of 75 boombox speakers by sound quality at $349.20; the B&O Beolit 20 ranks #33 and costs $599.99, so there is not much of a tradeoff to weigh.

What the Yeahbox Sonic Boom Ultra offers: By far the loudest boombox tested against it, hitting 106-107dB, roughly 3-5dB louder than the JBL Boombox 4, Zealot ZE41, Tribit Stormbox Blast 2, W-King X20, and Hopestar A90/A95. The massive 6x9in racetrack woofer reaches audible bass down to around 30Hz on the Country EQ preset, and a teardown confirmed genuinely robust internals: a thick vented voice coil and a dedicated crossover output per driver. HDMI ARC input/output lets it double as a TV soundbar, a feature none of its direct competitors offer. Watch for: The 500W peak-power rating doesn’t fully hold up: it gets noisy above roughly 80-90% volume, and the midrange isn’t fully refined, sometimes sitting a touch too forward. The custom EQ in the app noticeably reduces bass output compared to the factory presets and doesn’t persist after the speaker powers off. No Auracast, no removable battery, a plastic handle with some flex, and heavy at 11kg (24lb) for $388. Most of the sound-quality coverage comes from enthusiast listening-test comparisons rather than independent measurement.

What the B&O Beolit 20 offers: B&O Beolit 20 uses 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators. Its 2.7 kg, claimed 8 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 93dB and mono playback make it a practical option for its intended room or portable use. Watch for: Bass is limited by its 45Hz specification.

Buy the Yeahbox Sonic Boom Ultra. It ranks higher for sound quality than the B&O Beolit 20 and costs less, so there is no real case for the other one.

Want more options? Browse the full Portable Bluetooth rankings.

Buy the Yeahbox Sonic Boom Ultra at Amazon ($349.20) →Buy the B&O Beolit 20 at Amazon ($599.99) →

Specifications Side By Side

	Yeahbox Sonic Boom Ultra	B&O Beolit 20
Price	$349.20	$599.99
Ranked	#10 of 75 in Boombox Size Portable Bluetooth Speakers	#33 of 75 in Boombox Size Portable Bluetooth Speakers
App	Yes	Yes (Bang & Olufsen app)
Aux Input	Yes	Yes
Battery Capacity	45000mAh (Reviewer estimated)	-
Bluetooth Version	6.0	-
Dimensions	23.4" x 9.8" x 12.3" (595 x 248 x 313 mm)	5.3" x 9.1" x 7.4" (135 x 230 x 189 mm)
Drivers	6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way	2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators
EQ	Yes (Country, Classic, and custom app EQ; custom settings don't persist after the app closes)	Yes (App EQ)
Inputs	HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic	-
IP Rating	IPX6	IPX4
MicroSD Playback	Yes	-
Amplifier Power	320W RMS / 500W Peak	240W peak
Party Mode	No (TWS stereo pairing of 2 units only, no Auracast)	No
Power Input	USB-C (60W fast charging)	USB-C
Stereo	Yes	No
Omnidirectional	No	Yes
TWS	Yes	Yes
USB Playback	Yes	No
Weight	24.3 lbs (11 kg)	6 lbs (2.7 kg)
Digital Aux Input	No	No
Bluetooth Codecs	SBC (inferred; additional codecs unverified)	SBC
Lights	Yes	-
Bass Extension (-10dB)	-	45Hz
Battery Life	-	8 hours (Manufacturer specified)
Power Bank	-	Yes (USB-C)
Built-in Microphone	-	Yes
Maximum SPL	-	93dB (Manufacturer specified)

Buy the Yeahbox Sonic Boom Ultra at Amazon ($349.20) →Buy the B&O Beolit 20 at Amazon ($599.99) →

More top alternatives to Yeahbox Sonic Boom Ultra:

Prices on this page were last checked September 16, 2026 at 12:41 AM 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

Yeahbox Sonic Boom Ultra: $349.20 Amazon eBay

Pros: By far the loudest boombox tested against it, hitting 106-107dB, roughly 3-5dB louder than the JBL Boombox 4, Zealot ZE41, Tribit Stormbox Blast 2, W-King X20, and Hopestar A90/A95. The massive 6x9in racetrack woofer reaches audible bass down to around 30Hz on the Country EQ preset, and a teardown confirmed genuinely robust internals: a thick vented voice coil and a dedicated crossover output per driver. HDMI ARC input/output lets it double as a TV soundbar, a feature none of its direct competitors offer.

Cons: The 500W peak-power rating doesn’t fully hold up: it gets noisy above roughly 80-90% volume, and the midrange isn’t fully refined, sometimes sitting a touch too forward. The custom EQ in the app noticeably reduces bass output compared to the factory presets and doesn’t persist after the speaker powers off. No Auracast, no removable battery, a plastic handle with some flex, and heavy at 11kg (24lb) for $388. Most of the sound-quality coverage comes from enthusiast listening-test comparisons rather than independent measurement.

Full Yeahbox Sonic Boom Ultra review and specifications →

Amplifier Power	320W RMS / 500W Peak
App	Yes
Aux Input	Yes
Battery Capacity	45000mAh (Reviewer estimated)
Bluetooth Codecs	SBC (inferred; additional codecs unverified)
Bluetooth Version	6.0
Digital Aux Input	No
Dimensions	23.4" x 9.8" x 12.3" (595 x 248 x 313 mm)
Drivers	6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way
EQ	Yes (Country, Classic, and custom app EQ; custom settings don't persist after the app closes)
IP Rating	IPX6
Inputs	HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic
Lights	Yes
MicroSD Playback	Yes
Omnidirectional	No
Party Mode	No (TWS stereo pairing of 2 units only, no Auracast)
Power Input	USB-C (60W fast charging)
Stereo	Yes
TWS	Yes
USB Playback	Yes
Weight	24.3 lbs (11 kg)

Check current price at Amazon ($349.20) →Search eBay for Yeahbox Sonic Boom Ultra →

B&O Beolit 20: $599.99 Amazon eBay

Pros: B&O Beolit 20 uses 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators. Its 2.7 kg, claimed 8 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 93dB and mono playback make it a practical option for its intended room or portable use. Measured bass extension of 45Hz (-10dB).

Cons: Bass is limited by its 45Hz specification.

Full B&O Beolit 20 review and specifications →

Amplifier Power	240W peak
App	Yes (Bang & Olufsen app)
Aux Input	Yes
Bass Extension (-10dB)	45Hz
Battery Life	8 hours (Manufacturer specified)
Bluetooth Codecs	SBC
Built-in Microphone	Yes
Digital Aux Input	No
Dimensions	5.3" x 9.1" x 7.4" (135 x 230 x 189 mm)
Drivers	2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators
EQ	Yes (App EQ)
IP Rating	IPX4
Maximum SPL	93dB (Manufacturer specified)
Omnidirectional	Yes
Party Mode	No
Power Bank	Yes (USB-C)
Power Input	USB-C
Stereo	No
TWS	Yes
USB Playback	No
Weight	6 lbs (2.7 kg)

Check current price at Amazon ($599.99) →Search eBay for B&O Beolit 20 →

Specifications Side By Side

Related Speaker Comparisons

The Two Speakers In Full

Yeahbox Sonic Boom Ultra: $349.20 Amazon eBay

B&O Beolit 20: $599.99 Amazon eBay