Short answer: the Genelec S360. It ranks #28 of 119 powered bookshelf speakers by sound quality, rated 4.5/5, at $9,550. The Devialet Phantom Ultimate 108dB ranks #41, rated 4.4/5, at $7,998, $1,552 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Devialet Phantom Ultimate 108dB is the more accurate, deeper-bass choice. A single cabinet wireless speaker with astonishingly deep bass, nearly flat sound, and full streaming support for a complete music system. Its measured preference score, a predictor of how neutral it sounds, is 6.73 against 5.96 for the Genelec S360. Its bass reaches about 21Hz before falling 3dB, against 39.6Hz for the Genelec S360. Watch for: DSP limiting and compression take over near maximum volume, so the deep bass you hear at moderate levels shrinks when you push it; Erin’s 96dB distortion test ran into the limiter.
Why pick the Genelec S360: A high output studio monitor with balanced sound and room calibration, built to play very loud from a distance. Watch for: The substantial enclosure and installation requirements make it excessive for many desks.
Buy the Genelec S360. It is rated higher for sound quality, and the $1,552 you would save on the Devialet Phantom Ultimate 108dB does not close the gap.
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Specifications Side By Side
| Devialet Phantom Ultimate 108dB | Genelec S360 | |
|---|---|---|
| Price | $7,998 per pair | $9,550 per pair |
| Ranked | #41 of 119 in Large Size Powered Bookshelf Speakers | #28 of 119 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | <21Hz (measured, Erin’s Audio Corner) | 39.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | <21Hz (measured, Erin’s Audio Corner) | 35.6Hz (measured, Audio Science Review) |
| Dimensions | 10”H x 9.7”W x 13.5”D (255 x 246 x 342 mm) | 20.9”H x 14.2”W x 14.2”D (530 x 360 x 360 mm) |
| Weight | 24.5 lbs (11.1 kg) each | 66.1 lbs (30 kg) each |
| Drivers | Aluminum tweeter, aluminum midrange, two opposed aluminum woofers | 1” titanium compression tweeter, 10” cone woofer |
| Inputs | Wi-Fi, Ethernet, Bluetooth, Optical | XLR (analog), XLR AES/EBU (digital) |
| App | Yes (Devialet) | - |
| Bluetooth | Yes | No |
| Bluetooth Version | 5.3 | - |
| Bluetooth Codecs | SBC, AAC | - |
| Wi-Fi | Yes (Wi-Fi 6, dual-band) | - |
| Streaming Services | Yes (AirPlay 2, Google Cast, Spotify Connect, TIDAL Connect, Roon Ready, UPnP) | - |
| Amplifier Power | 1,100W total | 350W total (250W woofer, 100W tweeter, Class D) |
| Maximum SPL | 108dB (manufacturer specified) | Peak 128dB (manufacturer specified) |
| Frequency Response | 14Hz - 35kHz (Manufacturer specified) | 36Hz-22kHz -6dB |
| Spinorama Preference Score | 6.73 | 5.96 |
| Spinorama Preference Score with Perfect Sub | 7.38 | 7.70 |
| Subwoofer Output | No | - |
| XLR Input | No | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | Yes |
| Aux Input | No | No |
| Enclosure | - | ported |
| Warranty | - | 2 years (5 with product registration) |
| Country | - | Finland |
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