Short answer: the Zealot ZE21. It ranks #18 of 112 boombox speakers by sound quality (rated 4.0/5) at $187.15 and is still sold new; the Demerbox DB2 ranks #74 (rated 2.8/5) and is discontinued, so it is only an option used.
The Zealot ZE21 is the better-sounding choice. A rugged battery boombox with unusually deep bass, very long battery life, and stereo pairing for party scale sound. It links with other speakers (PartyAdd up to 100 speakers), which the Demerbox DB2 cannot. It has an adjustable EQ, which the Demerbox DB2 lacks. The tradeoff: That deep-bass emphasis comes with a pronounced 60-110Hz kick-bass dip and over-loud 250-600Hz lower mids, which can make rock and pop sound hollow or boxy.
The Demerbox DB2 is the 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 ZE21 at 20.4 lbs (9.27 kg). Watch for: Bass is not as deep as better speakers.
Buy the Zealot ZE21. It is rated higher for sound quality; the Demerbox DB2 is no longer sold new.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A rugged battery boombox with unusually deep bass, very long battery life, and stereo pairing for party scale sound.
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 ZE21 | Demerbox DB2 | |
|---|---|---|
| Price | $187.15 | $400 Discontinued |
| Ranked | #18 of 112 in Boombox Size Portable Bluetooth Speakers | #74 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | No |
| IP Rating | IPX6 | IP67 |
| MicroSD Playback | Yes | - |
| Party Mode | Yes (PartyAdd up to 100 speakers) | No |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 20.4 lbs (9.27 kg) | 5.4 lbs (2.47 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A + USB-C) |
| USB Playback | Yes | No |
| Built-in Microphone | No | No |
| Amplifier Power | 250W | 22W RMS |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) | 10.6” x 9.7” x 6.9” (270 x 246 x 175 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators | 2x 3” (76mm) aluminum cone full-range drivers |
| Maximum SPL | 116dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | - |
| FM Tuner | - | No |
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