Short answer: the Vifa Oslo for sound quality, the Kilburn II for rugged portability. The Oslo delivers extreme treble detail with decent bass and a full, natural, accurate sound at higher volumes from opposing 65mm woofers, plus 10 hours of battery, though it dips at 270Hz. The Kilburn II has a 20W Class D amp, dual 8W tweeters, 20+ hours of battery and a rugged build, but boosts upper bass and peaks in the upper mids.
Buy the Vifa Oslo. It is rated higher for sound quality, and saving $270 with the Marshall Kilburn II does not make up for the sound-quality gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Kilburn II | Vifa Oslo | |
|---|---|---|
| Price | $279.00 | $549.00 |
| Ranked | #39 of 83 in Large Size Portable Bluetooth Speakers | #8 of 83 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~58Hz | 50Hz |
| Battery Life | 20 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| IP Rating | IPX2 | None |
| Weight | 5.5 lbs (2.49 kg) | 5.3 lbs (2.4 kg) |
| App | No | No (official app is broken, 3rd party android app only) |
| Bluetooth Codecs | SBC | aptX, SBC |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Party Mode | No | No |
| Power Bank | No | No |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Amplifier Power | 36W | 50W |
| Dimensions | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) | 10.6” x 7.1” x 3.5” (268 x 181 x 90 mm) |
| Drivers | 1x 4” (102mm) woofer + 2x 20mm dome tweeters | 2x 50mm fullrange, 2x 80mm woofers + passive radiators |
| Maximum SPL | 102dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.0 | 4.1 |
| Strap | Yes (built-in strap) | - |
| Frequency Response | - | 55Hz - 20kHz (Manufacturer specified) |
Related Speaker Comparisons
How Vifa Oslo compares with other leading options:
- Vifa Helsinki vs Vifa Oslo
- JBL Xtreme 5 vs Vifa Oslo
- Tribit Stormbox Lava vs Vifa Oslo
- Brane X vs Vifa Oslo
- Minirig 3 with subwoofer vs Vifa Oslo
Prices on this page were last checked September 26, 2026 at 11:14 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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The Two Speakers In Full
Marshall Kilburn II: $279.00 Amazon eBay
Pros: 20W Class D amp + dual 8W tweeters. 20+ hour battery with quick-charge (20 min charges 3 hours of play). Rugged design with leather handle and reinforced corners, IPX2 rated. Thrives with rock music. Bluetooth 5.0 with 30ft range. Measured bass extension of ~58Hz (-10dB).
Cons: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak. Very low IPX2 water rating. AC charging
Full Marshall Kilburn II review and specifications →
| Amplifier Power | 36W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| EQ | No |
| IP Rating | IPX2 |
| Maximum SPL | 102dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in strap) |
| TWS | Yes |
| Weight | 5.5 lbs (2.49 kg) |
- Reviews, Comparisons and Sound Samples
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Vifa Oslo: $549.00 Amazon eBay
Pros: Extreme treble details with decent bass. Full, natural, accurate sound at higher volumes. Rich, full bass from opposing 65mm woofers. Premium Kvadrat wool fabric with aluminum handle. 10 hour battery life. Measured bass extension of 50Hz (-10dB).
Cons: Dip at 270Hz. The Vifa Helsinki is cheaper and generally has a more neutral frequency response, so it is the better buy if you specifically want a Vifa. This one is hard to recommend generally these days: the Uboom L has 95% of the sound quality with more features and a much cheaper price.
Full Vifa Oslo review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No (official app is broken, 3rd party android app only) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX, SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.6” x 7.1” x 3.5” (268 x 181 x 90 mm) |
| Drivers | 2x 50mm fullrange, 2x 80mm woofers + passive radiators |
| EQ | No |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Partially (1 woofer) |
| TWS | No |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons