Introduction & Acoustic Identity

The Devialet Phantom Ultimate 108 dB represents the pinnacle of compact high-end loudspeaker engineering. It achieves exceptionally high maximum output while maintaining class-leading fidelity, tonal accuracy, and ultra-low distortion. Designed for environments where both performance and aesthetics must reach reference standards, Phantom Ultimate 108 dB delivers full-range reproduction with remarkable clarity, expansive dynamics, and visceral low-frequency impact.

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Driver System & Acoustic Architecture

The acoustic engine consists of a proprietary three-driver topology:

• One precision full-range aluminum dome driver

• Two symmetrical side-firing aluminum woofers

This controlled architecture is governed by a 32-bit/192 kHz DSP platform optimized for linearity, coherence, and transient stability. The result is a frequency response extending from 14 Hz to 27 kHz (±6 dB), enabling deep, controlled bass with extraordinary physicality and refined, extended treble reproduction.

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Amplification & Output Capability

The Phantom Ultimate 108 dB incorporates Devialet’s next-generation ADH® amplification platform, combining analog and digital amplification stages to produce:

• A total amplification power of 1100 W

• Maximum output of 108 dB SPL at one meter

• Ultra-low noise and distortion floor

This system allows Phantom to energize larger rooms while retaining precise imaging, demanding transients, and high-resolution rendering, even at elevated playback levels.

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Devialet Technologies & Signal Processing

The Phantom Ultimate 108 dB integrates multiple proprietary systems:

• SAM® (Speaker Active Matching)
  Maintains driver alignment, phase accuracy, suspension correction, and low-frequency extension.

• HBI® (Heart Bass Implosion)
  Utilizes a high-pressure acoustic chamber to achieve controlled sub-bass reproduction that surpasses the typical limitations of compact enclosures.

• AVL™ (Adaptive Volume Level)
  Preserves tonal balance and spatial character regardless of output level.

• DAC Magic Wire®
  Minimizes digital-to-analog path length for superior transient accuracy and fine-detail resolution.

All advanced processing runs under Devialet ASIC hardware, managed by the DOS 3 proprietary operating system.

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Processing Platform & Structural Engineering

Phantom Ultimate 108 dB is controlled by a high-performance NXP i.MX processor, ensuring:

• Rapid response for streaming and buffering

• Stable multi-room synchronisation

• Low-latency signal processing

Internal electronics are supported by a reinforced composite enclosure with an aluminum structural core, engineered for rigidity, resonance suppression, and long-term reliability.

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Streaming Ecosystem & Connectivity

Wireless and wired connectivity are comprehensive and future-ready, supporting:

• AirPlay 2

• Google Cast

• Spotify Connect (including lossless-capable streams)

• Tidal Connect

• UPnP

• Roon Ready (RAAT)

• Bluetooth (SBC and AAC)

Wired digital integration includes:

• Mini-TOSLINK optical input

Networking options:

• Dual-band Wi-Fi

• Gigabit Ethernet (100/1000 Mbps)

Phantom synchronisation is achieved via Wi-Fi or Ethernet, enabling stereo pairing and precision multi-room deployment.

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Industrial Design & Placement

Phantom Ultimate 108 dB maintains a compact profile relative to its output capability, allowing flexible installation options while ensuring physical stability. The external finish features Devialet’s signature ultra-matte coating complemented by polished accents, integrating seamlessly into premium interiors.

Its mass and enclosure geometry suppress unwanted vibration and colorations, contributing to its precise imaging and low-frequency authority.

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Power Management & Reliability

The unit operates on 100–240 V AC (50/60 Hz), ensuring international compatibility.
Standby and off-mode consumption remain highly efficient, while internal thermal regulation maintains long-term stability during sustained high-output playback.

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Acoustic Performance & Application Scenarios

As a single standalone loudspeaker, Phantom Ultimate 108 dB provides a full, coherent soundstage suitable for:

• Luxury living spaces

• Boutique hospitality environments

• Designer interiors

• Audiophile-grade residential setups

As a stereo pair, it approaches monitoring-level spatial accuracy with significantly greater dynamic authority and bandwidth capability.

Its broadband linearity and controlled phase behavior allow accurate reproduction of every genre — classical, acoustic, jazz, pop, electronic, film scores, and immersive low-frequency content.

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Conclusion

The Devialet Phantom Ultimate 108 dB is a benchmark in compact high-performance loudspeakers, combining ultra-low distortion, reference-grade frequency extension, advanced hybrid amplification, intelligent DSP, and broad streaming compatibility.
It is a future-ready solution for environments where design requires elegance and performance requires precision, scale, and emotional impact.