Short answer: the Yeahbox Sonic Boom Ultra. It ranks #11 of 113 boombox speakers by sound quality (rated 4.2/5) at $388 and is still sold new; the Bumpboxx Flare 8 ranks #82 (rated 2.6/5) and is discontinued, so it is only an option used. The Bumpboxx Flare 8’s replacement, the Bumpboxx Flare8 Pro, is rated 2.8/5 at $449.
The Yeahbox Sonic Boom Ultra is the better-sounding, longer-running choice. A massively loud boombox with deep bass, long battery life, and HDMI ARC so it can double as a TV soundbar. It is rated for 24 hours of battery against 12 for the Bumpboxx Flare 8. The tradeoff: 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 Bumpboxx Flare 8 is the lighter choice. A retro styled party speaker with FM radio, water resistance and high volume for small outdoor parties. At 19 lbs (8.62 kg) it weighs noticeably less than the Yeahbox Sonic Boom Ultra at 24.3 lbs (11 kg). The catch: Bass is thuddy rather than deep or controlled, and there is no app to improve the tuning.
Buy the Yeahbox Sonic Boom Ultra. It is rated higher for sound quality, and the Bumpboxx Flare 8 is discontinued, so it is only available used.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Yeahbox Sonic Boom Ultra | Bumpboxx Flare 8 | |
|---|---|---|
| Price | $388.00 | $400 Discontinued |
| Ranked | #11 of 113 in Boombox Size Portable Bluetooth Speakers | #82 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Capacity | 45000mAh (Reviewer estimated) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 6.0 | - |
| Dimensions | 23.4” x 9.8” x 12.3” (595 x 248 x 313 mm) | 28” x 8” x 16” (711 x 203 x 406 mm) |
| Drivers | 6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way | 8” woofer + tweeters |
| EQ | Yes (Country, Classic, and custom app EQ; custom settings don’t persist after the app closes) | Yes |
| Inputs | HDMI ARC (in/out, usable as a TV soundbar), AUX in/out, USB drive, microSD, optional wired mic | - |
| IP Rating | IPX6 | IPX6 |
| MicroSD Playback | Yes | Yes |
| Amplifier Power | 320W RMS / 500W Peak | 200W |
| Party Mode | No (TWS stereo pairing of 2 units only, no Auracast) | No |
| Power Input | USB-C (60W fast charging) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 24.3 lbs (11 kg) | 19 lbs (8.62 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Strap | No | - |
| Power Bank | - | No |
| Built-in Microphone | - | No |
| FM Tuner | - | Yes |
| Maximum SPL | - | 118dB (Manufacturer specified) |
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