Short answer: the Yeahbox Sonic Boom Max 3. It ranks #59 of 112 boombox speakers by sound quality (rated 3.2/5) at $228.99 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 Yeahbox Sonic Boom Max 3 is the better-sounding choice. A large party speaker with powerful bass, a big fast charging battery and app EQ for outdoor parties. It has an adjustable EQ, which the Demerbox DB2 lacks. The tradeoff: There is limited independent testing and the water/dust rating is reported inconsistently across listings.
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 Yeahbox Sonic Boom Max 3 at 16.8 lbs (7.64 kg). Watch for: Bass is not as deep as better speakers.
Buy the Yeahbox Sonic Boom Max 3. 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 large party speaker with powerful bass, a big fast charging battery and app EQ for outdoor parties.
A nearly indestructible waterproof speaker built from a Pelican case, with a 40 hour battery and dry storage.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Yeahbox Sonic Boom Max 3 | Demerbox DB2 | |
|---|---|---|
| Price | $228.99 | $400 Discontinued |
| Ranked | #59 of 112 in Boombox Size Portable Bluetooth Speakers | #74 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 111Wh (14.8V/7,500mAh) (Manufacturer specified) | 40 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IPX6 | IP67 |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 16.8 lbs (7.64 kg) | 5.4 lbs (2.47 kg) |
| USB Playback | Yes | No |
| Amplifier Power | 200W RMS / 300W Peak | 22W RMS |
| Dimensions | 20.7” x 8.3” x 10.6” (525 x 210 x 268 mm) | 10.6” x 9.7” x 6.9” (270 x 246 x 175 mm) |
| Drivers | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters | 2x 3” (76mm) aluminum cone full-range drivers |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | - |
| Strap | No | - |
| Power Bank | - | Yes (USB-A + USB-C) |
| Party Mode | - | No |
| Built-in Microphone | - | No |
| FM Tuner | - | No |
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