Short answer: both are discontinued, so this only matters if you are buying used. Used, the Vifa Helsinki is the better pick: it ranks #1 of 120 large speakers by sound quality (rated 4.8/5), against #8 (rated 4.5/5) for the Vifa Oslo.
The Vifa Helsinki is the lighter pick. A superb sounding battery powered speaker, with exceptionally clean mids and treble, now discontinued but worth buying used. At 3.1 lbs (1.4 kg) it weighs much less than the Vifa Oslo at 5.3 lbs (2.4 kg). The catch: No TWS pairing, looks like a purse, requires a hacked Vifa app (Android only post #48) to enable night mode to sound good.
What the Vifa Oslo does well: A premium wool covered portable with full, natural, highly accurate sound and rich bass, now discontinued but worth buying used. The catch: Dip at 270Hz.
Buy the Vifa Helsinki only if you find one used in good condition; both are discontinued, and it is the better rated of the two.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Vifa Helsinki | Vifa Oslo | |
|---|---|---|
| Price | $449.00 Discontinued | $549.00 Discontinued |
| Ranked | #1 of 120 in Large Size Portable Bluetooth Speakers | #8 of 120 in Large Size Portable Bluetooth Speakers |
| App | No (official app is broken, 3rd party android app only) | No (official app is broken, 3rd party android app only) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 48Hz | 50Hz |
| Battery Life | 8 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | aptX, SBC | aptX, SBC |
| IP Rating | None | None |
| Party Mode | No | No |
| Power Input | AC Power brick | AC Power brick |
| Stereo | Partially (shared woofer) | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | No | No |
| Weight | 3.1 lbs (1.4 kg) | 5.3 lbs (2.4 kg) |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Power Bank | No | No |
| Bluetooth Version | 4.1 | 4.1 |
| Dimensions | 6.1” x 8.3” x 2.8” (156 x 210 x 70 mm) | 10.6” x 7.1” x 3.5” (268 x 181 x 90 mm) |
| Drivers | 2x 50mm fullrange, 2x 66mm woofers + 2x passive radiators | 2x 50mm fullrange, 2x 80mm woofers + passive radiators |
| Frequency Response | 58Hz - 18kHz (Manufacturer specified) | 55Hz - 20kHz (Manufacturer specified) |
| Digital Aux Input | No | No |
| Amplifier Power | 50W | 50W |
| Strap | Yes (built-in strap) | - |
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