Short answer: the Zealot S97. It ranks #66 of 120 large speakers by sound quality, rated 3.4/5, at $79.98; the DOSS Extreme Boom ranks #115, rated 2.1/5, at $75.99. Close enough in price that the sound-quality gap is the deciding factor.
The Zealot S97 is the better-sounding option. A budget boombox with surprisingly deep bass for its size, waterproofing, power bank outputs, and microSD and aux playback. It links with other speakers (PartyAdd up to 100 speakers), which the DOSS Extreme Boom cannot. It has an adjustable EQ, which the DOSS Extreme Boom lacks. Watch for: It is not especially loud for its size, battery life is only a claimed 12 hours, and the bass preset can swamp the rest of the music.
The DOSS Extreme Boom is the longer-running, lighter option. An affordable waterproof outdoor speaker with a long rated battery, power bank output, and bass heavy sound for casual parties. It is rated for 30 hours of battery against 12 for the Zealot S97. At 5.6 lbs (2.52 kg) it weighs noticeably less than the Zealot S97 at 7.3 lbs (3.3 kg). Watch for: The measured 65Hz -10dB bass point means it lacks true low bass despite its boomy voicing.
Buy the Zealot S97. It is rated higher for sound quality, and the $3.99 you would save on the DOSS Extreme Boom does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Zealot S97 | DOSS Extreme Boom | |
|---|---|---|
| Price | $79.98 | $75.99 |
| Ranked | #66 of 120 in Large Size Portable Bluetooth Speakers | #115 of 120 in Large Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| EQ | 3 EQ presets | No |
| IP Rating | IPX6 | IPX7 |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (PartyAdd up to 100 speakers) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 7.3 lbs (3.3 kg) | 5.6 lbs (2.52 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A) |
| Bluetooth Version | 5.2 | 5.3 |
| Dimensions | 12.6” x 7.3” x 5.9” (321 x 185 x 151 mm) | 12.7” x 4.7” x 7.2” (323 x 120 x 184 mm) |
| Amplifier Power | 80W | 60W |
| Drivers | 2x 76mm (3”) woofers + 2x 38mm tweeters + 2x passive radiators | 60W: Dual drivers + passive radiator |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 65Hz |
| Strap | - | Yes (detachable shoulder strap) |
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