Short answer: the Tribit Stormbox Blast. It ranks #2 of 112 boombox speakers by sound quality, rated 4.5/5, at $179.99; the Yeahbox Sonic Boom Ultra ranks #11, rated 4.2/5, and costs $388, so there is little reason to consider the other one.
What the Yeahbox Sonic Boom Ultra does well: A massively loud boombox with deep bass, long battery life, and HDMI ARC so it can double as a TV soundbar. 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 Tribit Stormbox Blast is the lighter pick. A boombox with bass and volume that rival bigger party speakers, quite neutral sound, and a 30 hour battery. At 12 lbs (5.45 kg) it weighs much less than the Yeahbox Sonic Boom Ultra at 24.3 lbs (11 kg). The catch: Lacks a bit of detail compared to the top ranked speakers in other size categories, dip at 5.5kHz.
Buy the Tribit Stormbox Blast. It is rated higher for sound quality than the Yeahbox Sonic Boom Ultra and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Portable Bluetooth rankings.
A massively loud boombox with deep bass, long battery life, and HDMI ARC so it can double as a TV soundbar.
A boombox with bass and volume that rival bigger party speakers, quite neutral sound, and a 30 hour battery.
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Specifications Side By Side
| Yeahbox Sonic Boom Ultra | Tribit Stormbox Blast | |
|---|---|---|
| Price | $388.00 | $179.99 |
| Ranked | #11 of 112 in Boombox Size Portable Bluetooth Speakers | #2 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (Tribit App) |
| Aux Input | Yes | Yes |
| Battery Capacity | 45000mAh (Reviewer estimated) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 6.0 | 5.3 |
| Dimensions | 23.4” x 9.8” x 12.3” (595 x 248 x 313 mm) | 15.7” x 6.3” x 9.1” (400 x 160 x 230 mm) |
| Drivers | 6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way | 2x ~107mm (4.2”) woofers + 2x ~25mm tweeters |
| EQ | Yes (Country, Classic, and custom app EQ; custom settings don’t persist after the app closes) | Yes (10 band) |
| Inputs | HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic | - |
| IP Rating | IPX6 | IPX7 |
| MicroSD Playback | Yes | No |
| Amplifier Power | 320W RMS / 500W Peak | 90W RMS (140W peak) |
| Party Mode | No (TWS stereo pairing of 2 units only, no Auracast) | No |
| Power Input | USB-C (60W fast charging) | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 24.3 lbs (11 kg) | 12 lbs (5.45 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Strap | No | No |
| Aux Latency | - | 0ms |
| Bass Extension (-10dB) | - | 43Hz |
| Built-in Microphone | - | No |
| Bluetooth Latency | - | 66ms |
| Maximum SPL | - | 108dB (measured by Alan Ross Reviews) |
| Power Bank | - | Yes (USB-A) |
| FM Tuner | - | No |
| Microphone Input | - | No |
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