DEVIALET Phantom Ultimate 108 dB Light Pearl stereo

The Phantom Ultimate 108 dB is the latest version of Devialet’s sonic sphere. This stereo speaker, launched in 2025, retains the ovoid design of the previous generation and incorporates four specific patents aimed at optimizing sound reproduction in a compact format.

Proprietary technologies: when French innovation pushes the boundaries of physics

The Phantom Ultimate 108 dB integrates seven exclusive technologies that work in synergy to produce exceptionally pure sound. The new-generation ADH (Analog Digital Hybrid) represents a major advancement over previous versions. This technology now combines a Class A control stage with a Class D power stage using gallium nitride components, which are more thermally efficient. The result: extended linearity up to 35 kHz in high frequencies, total harmonic distortion reduced to 0.001%, and optimized energy consumption.

The SAM (Speaker Active Matching) system analyzes and corrects the amplitude and phase of the audio signal in real time. This technology instantly adapts the speaker’s response to the signal characteristics, guaranteeing absolute fidelity to original recordings. The Ultimate version benefits from improved algorithms that even account for ambient temperature and humidity variations to maintain consistent sound quality.

HBI (Heart Bass Implosion) technology enables a frequency response extending down to 14 Hz, well below the human auditory perception threshold. The two 6-inch side-mounted woofers, positioned back-to-back in a push-push configuration, move in perfect synchronization with a maximum excursion of 26 mm. This configuration generates pressure waves of palpable physical intensity, creating a unique visceral sensation where bass is not only heard but literally felt throughout the body.

AVL (Adaptive Volume Level), initially developed for the Dione soundbar, intelligently normalizes sound levels between different content. This technology uses real-time dynamic equalization to automatically balance volume variations, particularly useful when switching between different sources or streaming services. The Magic Wire DAC, Devialet’s proprietary ASIC, and the DOS 3 operating system complete this technological arsenal, orchestrating everything with near-zero latency.

Construction and acoustics: French precision in service of sound

Each Phantom Ultimate 108 dB rests on a central core of injected aluminum that serves as a rigid chassis for all components. This structure is wrapped in a bi-injected composite shell combining an inner layer of glass fiber-reinforced polycarbonate for structural rigidity, and an outer ABS layer for aesthetics and protection. This construction eliminates any parasitic vibration, even at the highest volumes.

The three-way acoustic architecture includes a new-generation aluminum dome tweeter positioned at the center, surrounded by an annular aluminum midrange driver in a coaxial configuration. This arrangement guarantees perfect temporal coherence between mid and high frequencies. The two side-mounted ABS dome woofers, redesigned for this generation, feature a considerably refined profile thanks to a new suspension and motor. The absence of dust caps on the membranes improves their robustness while preserving their exceptional excursion.

The ACE (Active Cospherical Engine) spherical shape is not just an aesthetic choice: it represents the optimal geometry for minimizing diffractions and ensuring omnidirectional sound dispersion. The new tweeter protection grilles offer a 15% increased opening surface compared to the previous generation, improving transparency in high frequencies. The redesigned thermal connections enable 40% more efficient heat dissipation, allowing extended listening sessions at full power without performance degradation.

Interface and connectivity: intelligence in service of simplicity

The Phantom Ultimate features an NXP i.MX8 Nano quad-core processor running at 1.5 GHz, four times the computing power of the previous generation. This electronic brain runs DOS 3, Devialet’s proprietary operating system, which simultaneously handles 32-bit/96 kHz audio processing and multiple streaming protocols without any perceptible latency.

The integrated touch interface on top of each speaker includes four capacitive sensors and a status LED indicator. These controls allow direct control of play/pause, volume, and track navigation. The touch surface, invisible at rest, illuminates subtly during interaction, preserving the design’s purity while offering immediate responsiveness.

Wireless connectivity uses Wi-Fi 6 (802.11ax with 2×2 MIMO on 2.4 and 5 GHz bands), reducing latency by 75% compared to Wi-Fi 5 and improving stability in dense environments. Bluetooth 5.3 with SBC and AAC codecs ensures universal compatibility. Gigabit Ethernet guarantees ultra-stable wired connection for complex multiroom configurations. The TOSLINK optical input accepts signals up to 24-bit/192 kHz, ideal for connecting a television or external audio source.

Streaming and ecosystem: the convergence of audio services

The Phantom Ultimate 108 dB natively supports AirPlay 2, Google Cast, Spotify Connect, Tidal Connect, and UPnP, enabling direct streaming from your favorite applications. Roon Ready (RAAT) certification will satisfy music lovers with high-resolution local music libraries. The Devialet DOS 3 Sync protocol ensures perfect synchronization between two speakers in stereo configuration with uncompressed 96 kHz/24-bit transmission.

The Devialet app (iOS/Android) centralizes configuration and advanced settings. It offers three preset listening modes: Music for neutral reproduction, Cinema with expanded spatialization and dialogue correction, and Podcast optimizing vocal intelligibility. A six-band equalizer allows fine customization of the sound signature. Night mode intelligently reduces low frequencies after 10 PM to preserve neighborly relations. The programmable sleep function can be set from 30 minutes to 12 hours.

The Devialet Remote V2, sold separately, offers precise physical control with its stainless steel ring and matching matte white finish. It communicates via Bluetooth 5.0 BLE up to 20 meters and automatically synchronizes between multiple speakers. A single remote suffices to control a stereo pair, but multiple remotes can coexist and synchronize with each other.

Finishes and customization: French elegance

The Ultimate range comes in two distinct collections. The classic version offers Light Pearl (matte off-white evoking ceramic bisque) and Deep Forest (deep green almost black) finishes, both enhanced by metallic chrome mirror-finished flanks. The Opéra de Paris edition, fruit of the historic partnership with the prestigious institution, displays a luminous white with flanks covered in 22-carat gold leaf applied by hand.

Compatible accessories include the Treepod and Tree stands that elevate the speaker to optimal listening height, as well as the Gecko wall mount for discreet installation. The previous generation’s Cocoon carrying case remains compatible, although finishes may differ. The Arch box with phono preamp from the previous range is unfortunately not compatible with this new generation.

Stereo configuration: the sound stage redefined

In stereo configuration, two Phantom Ultimate 108 dB speakers create a sound stage of striking amplitude. The proprietary synchronization protocol guarantees absolute phase coherence between the two speakers, essential for precise stereophonic imaging. The combined power of 2200 watts RMS and the ability to generate 111 dB SPL create a sonic presence comparable to much larger systems.

The recommended optimal positioning places the speakers between 1.5 and 2.5 meters apart, with a 35-degree convergence toward the listening point. A height of 45 to 90 cm from the floor maximizes impact, while minimum spacing of 30 cm from the wall allows low frequencies to develop naturally. Omnidirectional dispersion ensures an enlarged listening zone, allowing multiple listeners to fully enjoy the experience.

Automatic calibration via the app analyzes your room’s acoustics and adjusts parameters to optimize reproduction. Extended stereo mode creates increased spatialization for mono or poorly mixed recordings, while focus mode tightens the image for critical listening. Ultra-low latency enables perfect synchronization with image when watching films or concerts.

Technical specifications

Audio performance

• Amplifier power: 1100 W
• Maximum sound pressure: 108 dB SPL @ 1 m
• Frequency response: 14 Hz – 35 kHz (±6 dB)
• Noise floor: 0 dB SPL @ 1 m
• Digital processing: 32‑bit / 96 kHz DSP
• Audio inputs: up to 24‑bit / 192 kHz

Drivers

• 1 aluminum dome tweeter (new generation)
• 1 aluminum dome midrange (new generation)
• 2 ABS dome woofers (new generation)

Exclusive technologies

• ADH® (hybrid analog/digital amplification) – new generation
• SAM® (Speaker Active Matching)
• HBI® (Heart Bass Implosion)
• AVL™ (Active Volume Level)
• DAC Magic Wire®
• Devialet ASIC
• Devialet Operating System (DOS 3)

Connectivity and streaming

• Wi‑Fi: Wi‑Fi 6 (802.11a / b / g / n / ac / ax, 2×2 MIMO, 2.4 and 5 GHz)
• Ethernet: RJ45 Gigabit (100 / 1000 Mbps)
• Inter‑speaker connection: Devialet DOS 3 Sync. Protocol (96 kHz / 24‑bit)
• Optical input: 1x TOSLINK®
• Bluetooth: 5.3 (A2DP and AVRCP profiles, SBC and AAC codecs)
• Streaming compatibility: AirPlay, Google Cast, Spotify Connect, Tidal Connect, UPnP, Roon Ready (RAAT)

Design and materials

• Configurations: mono / stereo (paired)
• Structure: bi‑injected composite enclosure (ABS + glass‑fiber‑reinforced polycarbonate, central core in die‑cast aluminum)

Dimensions and weight

• Speaker: 246 × 342 × 255 mm (W × D × H)
• Weight: 11.1 kg (speaker only) – 12.3 kg (packaging)

Power

• Voltage: 100–240 V~, 50 / 60 Hz
• Power consumption: off < 0.5 W | standby < 2 W

What’s in the box

• 2 Devialet Phantom Ultimate 108 dB speakers
• Power cable
• Documentation