Short answer: the Zealot S78, if you are buying new, though neither ranks well in its class. The Demerbox DB2 ranks higher than it (#74 vs #110 of 112 boombox speakers, 2.8/5 vs 2.0/5) but is discontinued, so only consider it used; the Zealot S78 is still sold new at $91.38. Both are rated below 3.0/5 among the 112 boombox speakers, so if sound quality matters, consider the Tribit Stormbox Blast instead, ranked #2 at $179.99.
The case for the Zealot S78: A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties. It has an adjustable EQ, which the Demerbox DB2 lacks. The catch: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
The Demerbox DB2 is the better-sounding, lighter pick. A nearly indestructible waterproof speaker built from a Pelican case, with a 40 hour battery and dry storage. At 5.4 lbs (2.47 kg) it weighs much less than the Zealot S78 at 9.7 lbs (4.4 kg). Watch for: Bass is not as deep as better speakers.
Buy the Zealot S78 new; the Demerbox DB2 is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties.
A nearly indestructible waterproof speaker built from a Pelican case, with a 40 hour battery and dry storage.
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Specifications Side By Side
| Zealot S78 | Demerbox DB2 | |
|---|---|---|
| Price | $91.38 | $400 Discontinued |
| Ranked | #110 of 112 in Boombox Size Portable Bluetooth Speakers | #74 of 112 in Boombox Size Portable Bluetooth Speakers |
| Bluetooth Version | 5.3 | - |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 9.7 lbs (4.4 kg) | 5.4 lbs (2.47 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes (multiple modes) | No |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Power Bank | Yes (USB-A) | Yes (USB-A + USB-C) |
| USB Playback | Yes | No |
| Built-in Microphone | No | No |
| Power Input | USB-C | AC Power brick |
| Amplifier Power | 120W RMS / 150W peak | 22W RMS |
| Dimensions | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) | 10.6” x 9.7” x 6.9” (270 x 246 x 175 mm) |
| Drivers | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators | 2x 3” (76mm) aluminum cone full-range drivers |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| FM Tuner | - | No |
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