Short answer: the Yeahbox Sonic Boom Ultra. It ranks #11 of 112 boombox speakers by sound quality, rated 4.2/5, at $388. The Zealot S95 ranks #37, rated 3.7/5, at $157.41, $230.59 cheaper, which does not close the gap in sound quality.
The Yeahbox Sonic Boom Ultra is the better-sounding, longer-running pick. 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 Zealot S95. 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 Zealot S95 is the lighter option. An affordable stereo boombox with water resistance, a power bank output and linking for up to 100 speakers. At 11.3 lbs (5.11 kg) it weighs much less than the Yeahbox Sonic Boom Ultra at 24.3 lbs (11 kg). It links with other speakers (PartyAdd up to 100 speakers), which the Yeahbox Sonic Boom Ultra cannot. The tradeoff: A little rolled off up top and not that balanced through the rest of the range.
Buy the Yeahbox Sonic Boom Ultra. It is rated higher for sound quality, and saving $230.59 with the Zealot S95 does not make up for the sound-quality gap.
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.
An affordable stereo boombox with water resistance, a power bank output and linking for up to 100 speakers.
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Specifications Side By Side
| Yeahbox Sonic Boom Ultra | Zealot S95 | |
|---|---|---|
| Price | $388.00 | $157.41 |
| Ranked | #11 of 112 in Boombox Size Portable Bluetooth Speakers | #37 of 112 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 | 5.3 |
| Dimensions | 23.4” x 9.8” x 12.3” (595 x 248 x 313 mm) | 14.1” x 9.6” x 6.6” (358 x 243 x 167 mm) |
| Drivers | 6x9in racetrack woofer (200W) + 2x 4.5in midrange (40W each) + 2x tweeters (20W each), true 3-way | 130W subwoofer + dual drivers |
| EQ | Yes (Country, Classic, and custom app EQ; custom settings don’t persist after the app closes) | Yes (multiple modes) |
| 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 | 120W |
| Party Mode | No (TWS stereo pairing of 2 units only, no Auracast) | Yes (PartyAdd up to 100 speakers) |
| 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) | 11.3 lbs (5.11 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Strap | No | - |
| Bass Extension (-10dB) | - | 45Hz |
| Power Bank | - | Yes (USB-A, 5V/2A) |
| Built-in Microphone | - | No |
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