Short answer: the Soundcore Boom 2, if you are buying new. The Vifa Oslo measures as well as it (#8 vs #10 of 120 large speakers, 4.5/5 vs 4.5/5) but is discontinued, so only consider it used; the Soundcore Boom 2 is still sold new at $99.99.
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. It supports aptX Bluetooth, which the Soundcore Boom 2 lacks. It keeps a wired aux input, which the Soundcore Boom 2 lacks. Watch for: Dip at 270Hz.
The Soundcore Boom 2 is the longer-running, lighter pick. A light, waterproof large speaker with deep bass for its size, a 24 hour battery and fun lighting. It is rated for 24 hours of battery against 8 for the Vifa Oslo. At 3.7 lbs (1.68 kg) it weighs noticeably less than the Vifa Oslo at 5.3 lbs (2.4 kg). It is rated IPX7, while the Vifa Oslo has no water resistance. Watch for: Only a single midrange driver, so you only get stereo for the tweeters.
Buy the Soundcore Boom 2, since the Vifa Oslo is discontinued and only worth hunting down used.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Vifa Oslo | Soundcore Boom 2 | |
|---|---|---|
| Price | $549.00 Discontinued | $99.99 |
| Ranked | #8 of 120 in Large Size Portable Bluetooth Speakers | #10 of 120 in Large Size Portable Bluetooth Speakers |
| App | No (official app is broken, 3rd party android app only) | Yes |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 50Hz | 47Hz |
| Battery Life | 8 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | aptX, SBC | SBC |
| IP Rating | None | IPX7 |
| Power Input | AC Power brick | USB-C |
| Stereo | Partially (1 woofer) | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 5.3 lbs (2.4 kg) | 3.7 lbs (1.68 kg) |
| Built-in Microphone | Yes | No |
| EQ | No | Yes |
| Party Mode | No | Yes (PartyCast 2.0 up to 100 speakers) |
| Power Bank | No | Yes (USB-A) |
| Bluetooth Version | 4.1 | 5.3 |
| Dimensions | 10.6” x 7.1” x 3.5” (268 x 181 x 90 mm) | 11.7” x 7.3” x 4” (297 x 185 x 102 mm) |
| Drivers | 2x 50mm fullrange, 2x 80mm woofers + passive radiators | 120mm x 90mm woofer, 2x 20mm tweeters |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) | 45Hz - 20kHz (Manufacturer specified) |
| Digital Aux Input | No | No |
| Amplifier Power | 50W | 80W |
| Bluetooth Latency | - | 125ms |
| Maximum SPL | - | 105dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | No |
| Lights | - | Yes |
| Strap | - | No |
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