Short answer: the Vifa Helsinki for sound quality, the Demerbox DB2 for battery life. The Helsinki is generally regarded as having the best midrange and treble of any battery powered Bluetooth speaker, though it has no TWS pairing, looks like a purse, and needs a hacked Vifa app for the night mode that makes it sound good. The DB2 runs 40+ hours, about 14 hours with phone charging mixed in, but its bass is not as deep as better speakers.
Buy the Demerbox DB2 ($400) for a boombox speaker; the Vifa Helsinki ($449) suits a large speaker instead.
Water resistance is not close: the Demerbox DB2 is rated at IP67 (brief submersion), well ahead of the Vifa Helsinki at no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Demerbox DB2 | Vifa Helsinki | |
|---|---|---|
| Price | $400 Discontinued | $449.00 Discontinued |
| Ranked | #75 of 113 in Boombox Size Portable Bluetooth Speakers | #1 of 120 in Large Size Portable Bluetooth Speakers |
| App | No | No (official app is broken, 3rd party android app only) |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| EQ | No | No |
| Power Bank | Yes (USB-A + USB-C) | No |
| Power Input | AC Power brick | AC Power brick |
| Stereo | Yes | Partially (shared woofer) |
| Omnidirectional | No | No |
| Weight | 5.4 lbs (2.47 kg) | 3.1 lbs (1.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | aptX, SBC |
| TWS | Yes | No |
| Party Mode | No | No |
| USB Playback | No | - |
| Built-in Microphone | No | Yes |
| FM Tuner | No | - |
| IP Rating | IP67 | None |
| Amplifier Power | 22W RMS | 50W |
| Dimensions | 10.6” x 9.7” x 6.9” (270 x 246 x 175 mm) | 6.1” x 8.3” x 2.8” (156 x 210 x 70 mm) |
| Drivers | 2x 3” (76mm) aluminum cone full-range drivers | 2x 50mm fullrange, 2x 66mm woofers + 2x passive radiators |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 48Hz |
| Bluetooth Version | - | 4.1 |
| Frequency Response | - | 58Hz - 18kHz (Manufacturer specified) |
| Strap | - | Yes (built-in strap) |
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