Devialet Phantom Ultimate 108 dB wireless speaker review: Sound refined and redefined
Popular Science
by Tony WareMarch 1, 2026
AI-Generated Deep Dive Summary
The Devialet Phantom Ultimate 108 dB wireless speaker redefines the concept of high-end audio with its audacious design and bold sound. This sculptural speaker, crafted over a decade in Paris, stands out in a market dominated by traditional designs like the KEF LS50 Wireless II and JBL 4329P. Combining organic presence with cutting-edge technology, it delivers a refined listening experience that matches its visually striking profile. Priced at $3,800, this speaker targets audiophiles who appreciate both sonic excellence and industrial innovation.
The Phantom Ultimate’s unique semi-spherical design feels more like art than audio hardware. It eliminates the typical boxy cabinet and rectangular grilles, instead opting for a sleek ovoid shape. This aesthetic is matched by its advanced engineering: 1,100 watts of Devialet’s proprietary ADH amplification, SAM processing, and AVL technology ensure consistent sound quality across all playback levels. The speaker’s interior features opposing ABS-dome woofers with HBI bass optimization, an aluminum dome tweeter, and a redesigned midrange structure. Its high-gloss finish, available in Deep Forest or Light Pearl, complements modern interiors while its optional connections (Wi-Fi 6, Ethernet, optical) make it versatile for multi-room setups.
For sound, the Phantom Ultimate delivers a rich, dynamic audio experience that feels as sculptural as its design. Tested solo and synced via Wi-Fi 6 and Ethernet, it demonstrated minimal wireless issues unless network congestion occurred. The speaker’s 32-bit/96 kHz streaming engine supports AirPlay 2, Google Cast, Spotify Connect, TIDAL Connect, UPnP, Roon, and Bluetooth 5.3 for seamless integration with modern audio systems. Its advanced processing ensures clarity and depth, even at high volumes.
This speaker matters to science and tech enthusiasts because it exemplifies the intersection of engineering and artistry. With over 200 patents, the Phantom Ultimate showcases Dev
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Originally published on Popular Science on 3/1/2026