Yeahbox Sonic Boom Ultra vs Yeahbox Sonic Boom Max 3

Last updated: September 16, 2026

Short answer: the Yeahbox Sonic Boom Ultra if sound quality matters most, the Yeahbox Sonic Boom Max 3 if price matters most. The Yeahbox Sonic Boom Ultra ranks #10 of 75 boombox speakers at $349.20. The Yeahbox Sonic Boom Max 3 ranks #40 at $228.99, $120.21 cheaper.

Yeahbox Sonic Boom Ultra vs Yeahbox Sonic Boom Max 3

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 Yeahbox Sonic Boom Max 3 offers: A large 3-way, 5-driver party speaker with claimed 200W RMS output, a 111Wh battery, USB-C fast charging, app EQ, TWS pairing, and aux, USB and microSD playback. Listener comparisons describe powerful bass, strong output and decent mids and highs for outdoor party use. Watch for: There is limited independent testing and the water/dust rating is reported inconsistently across listings. Listener comparisons find it less clear and refined than stronger boombox rivals, so its big bass and output are a better fit for parties than critical listening.

Buy the Yeahbox Sonic Boom Ultra if sound quality is the priority over the price, or the Yeahbox Sonic Boom Max 3 if the price is the priority over sound quality.

Looking for alternatives? See the complete Portable Bluetooth rankings.

Buy the Yeahbox Sonic Boom Ultra at Amazon ($349.20) →Buy the Yeahbox Sonic Boom Max 3 at Amazon ($228.99) →

Specifications Side By Side

Yeahbox Sonic Boom Ultra Yeahbox Sonic Boom Max 3
Price$349.20$228.99
Ranked#10 of 75 in Boombox Size Portable Bluetooth Speakers#40 of 75 in Boombox Size Portable Bluetooth Speakers
AppYesYes
Aux InputYesYes
Battery Capacity45000mAh (Reviewer estimated)-
Bluetooth Version6.05.3
Dimensions23.4" x 9.8" x 12.3" (595 x 248 x 313 mm)20.7" x 8.3" x 10.6" (525 x 210 x 268 mm)
Drivers6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters
EQYes (Country, Classic, and custom app EQ; custom settings don't persist after the app closes)Yes
InputsHDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic-
IP RatingIPX6IPX6
MicroSD PlaybackYesYes
Amplifier Power320W RMS / 500W Peak200W RMS / 300W Peak
Party ModeNo (TWS stereo pairing of 2 units only, no Auracast)-
Power InputUSB-C (60W fast charging)USB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
USB PlaybackYesYes
Weight24.3 lbs (11 kg)16.8 lbs (7.64 kg)
Digital Aux InputNoNo
Bluetooth CodecsSBC (inferred; additional codecs unverified)SBC (inferred; additional codecs unverified)
LightsYesYes
Battery Life-111Wh (14.8V/7,500mAh) (Manufacturer specified)
Buy the Yeahbox Sonic Boom Ultra at Amazon ($349.20) →Buy the Yeahbox Sonic Boom Max 3 at Amazon ($228.99) →

More worthwhile head-to-heads for 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

Yeahbox Sonic Boom Ultra ranking card

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 Power320W RMS / 500W Peak
AppYes
Aux InputYes
Battery Capacity45000mAh (Reviewer estimated)
Bluetooth CodecsSBC (inferred; additional codecs unverified)
Bluetooth Version6.0
Digital Aux InputNo
Dimensions23.4" x 9.8" x 12.3" (595 x 248 x 313 mm)
Drivers6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way
EQYes (Country, Classic, and custom app EQ; custom settings don't persist after the app closes)
IP RatingIPX6
InputsHDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic
LightsYes
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo (TWS stereo pairing of 2 units only, no Auracast)
Power InputUSB-C (60W fast charging)
StereoYes
TWSYes
USB PlaybackYes
Weight24.3 lbs (11 kg)
Check current price at Amazon ($349.20) →Search eBay for Yeahbox Sonic Boom Ultra →

Yeahbox Sonic Boom Max 3: $228.99 Amazon eBay

Yeahbox Sonic Boom Max 3 ranking card

Pros: A large 3-way, 5-driver party speaker with claimed 200W RMS output, a 111Wh battery, USB-C fast charging, app EQ, TWS pairing, and aux, USB and microSD playback. Listener comparisons describe powerful bass, strong output and decent mids and highs for outdoor party use.

Cons: There is limited independent testing and the water/dust rating is reported inconsistently across listings. Listener comparisons find it less clear and refined than stronger boombox rivals, so its big bass and output are a better fit for parties than critical listening.

Full Yeahbox Sonic Boom Max 3 review and specifications →

Amplifier Power200W RMS / 300W Peak
AppYes
Aux InputYes
Battery Life111Wh (14.8V/7,500mAh) (Manufacturer specified)
Bluetooth CodecsSBC (inferred; additional codecs unverified)
Bluetooth Version5.3
Digital Aux InputNo
Dimensions20.7" x 8.3" x 10.6" (525 x 210 x 268 mm)
Drivers189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters
EQYes
IP RatingIPX6
LightsYes
MicroSD PlaybackYes
OmnidirectionalNo
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackYes
Weight16.8 lbs (7.64 kg)
Check current price at Amazon ($228.99) →Search eBay for Yeahbox Sonic Boom Max 3 →