Short answer: the Devialet Phantom Ultimate 98dB for better sound quality, the Kali Audio IN-UNF for the lower price. The Devialet Phantom II 98 dB ranks higher than the Kali Audio IN-UNF (#11 vs #83 of 108 powered bookshelf speakers) but is discontinued. Its replacement, the Devialet Phantom Ultimate 98dB, is rated 4.4/5 at $3,998; the Kali Audio IN-UNF is rated 3.3/5 at $699, $3,299 cheaper.
The Devialet Phantom II 98 dB is the better-sounding, deeper-bass option. A compact wireless streaming speaker with startlingly deep bass for its size and an even, well balanced sound. Its bass reaches about 22.6Hz before falling 10dB, against 39Hz for the Kali Audio IN-UNF. The tradeoff: Small-enclosure bass extension at the measurement level does not guarantee the same response at high volume.
What the Kali Audio IN-UNF does well: A desk system of small coaxial satellites and a bass module, with DSP placement controls and USB-C, optical and balanced inputs. It keeps a wired aux input, which the Devialet Phantom II 98 dB lacks. The catch: The intended desk geometry is part of the acoustic design.
Buy the Kali Audio IN-UNF if price matters most. For better sound quality, the Devialet Phantom Ultimate 98dB, the replacement for the discontinued Devialet Phantom II 98 dB, is rated higher but costs $3,998.
Still deciding? The full Powered Home rankings cover every ranked option.
A compact wireless streaming speaker with startlingly deep bass for its size and an even, well balanced sound.
A desk system of small coaxial satellites and a bass module, with DSP placement controls and USB-C, optical and balanced inputs.
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
| Devialet Phantom II 98 dB | Kali Audio IN-UNF | |
|---|---|---|
| Price | $2,998 per pair Discontinued | $699 per pair |
| Ranked | #11 of 108 in Medium Size Powered Bookshelf Speakers | #83 of 108 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 30Hz (measured, spinorama.org) | 47Hz (manufacturer specified; Erin did not publish an anechoic F3) |
| Bass Extension (-10dB) | approximately 22.6Hz (measured, spinorama.org) | 39Hz (manufacturer specified; Erin did not publish an anechoic F10) |
| Drivers | One aluminum full-range driver; two aluminum bass drivers | Bass module: two opposed 4.5” woofers; satellites: 4” coincident midrange with 1” textile-dome tweeter |
| Inputs | Wi-Fi, Ethernet, Bluetooth, AirPlay 2, Spotify Connect, UPnP, Roon Ready, analog/optical combo jack | USB-C, optical, 3.5mm, balanced TRS |
| Bluetooth Codecs | SBC, AAC | - |
| Amplifier Power | 400W RMS each | 100W LF + 60W mid/HF per channel (continuous) |
| Dimensions | 6.6 x 6.2 x 8.6 in each | Bass module: 11.6”H x 19.4”W x 5.25”D; satellites: 6.25” diameter |
| Weight | 9.5 lbs (4.3 kg) each | 24.7 lbs (11.2 kg) |
| Maximum SPL | 98dB at 1m each (manufacturer specified) | 103dB peak at 1m (manufacturer specified) |
| Spinorama Preference Score | 6.87 | - |
| Spinorama Preference Score with Perfect Sub | 7.95 | - |
| XLR Input | No | No |
| RCA Input | No | No |
| TRS Input | No | Yes |
| Optical Input | Yes | Yes |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | Yes |
| Bluetooth | Yes | No |
| Frequency Response | 18Hz - 21kHz (-6dB) (Manufacturer specified) | 47Hz - 21kHz +/-3dB (manufacturer specified) |
| Bluetooth Version | 5.0 | - |
| Crossover Frequency | - | 280Hz LF-to-midrange; 2.8kHz midrange-to-HF |
| DSP | - | Yes (placement/boundary and tonal trims) |
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