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Sonus Faber Gravis III
The Gravis III active subwoofer delivers powerful and precise bass with signature Sonus faber style.
THE ULTIMATE DEPTH
Exemplifying unmatched power and elegance, the Gravis III active subwoofer is meticulously crafted to deliver striking bass performance. It seamlessly harmonizes with various sound systems and shares both an acoustic and visual affinity with the Sonus faber Olympica Nova collection.
ICONIC SONUS FABER DESIGN
Each subwoofer boasts an artisan-crafted wooden or lacquer top, enhancing its aesthetic allure. With its sleek, unembellished body, the design radiates a sense of purity and sophistication, complemented by Sonus faber’s signature leather finish on the sides.
THE PURSUIT OF DEPTH
Gravis adds beauty and depth to Sonus faber’s Natural Sound signature
EXPERTISE AND ARTISANSHIP
Gravis melds decades of Sonus faber design and audio expertise into a contemporary package, enhancing the depth and clarity of our Natural Sound signature in a seamlessly integrated design.
THE REAR PANEL
The Gravis III subwoofer offers versatile connectivity, accommodating both high-level and low-level signals. The high-level input employs a Speakon© 4-pin connector, while the line-level signals can be transmitted via balanced or unbalanced cables.
SPEAKER UNIT
Gravis III boasts a 10” (250mm) ultra-long throw driver equipped with a trilaminated sandwich cone diaphragm. This diaphragm comprises two layers of woven synthetic fibers (Fiberglass) with a layer of nomex honeycomb structure in between, effectively managing the driver's excursion and resistance flexing.
WIRELESS PAIRING
Gravis III can be wirelessly paired by using the Gravis Transmitter. The Gravis Transmitter transmits signals in wireless mode to the Gravis III active subwoofer, with maximum versatility in a compact form that is easy to integrate into any listening environment.
DEDICATED APP
The Gravis III is fully controllable through dedicated, user-friendly app. Available for iOS and Android systems, this app makes the subwoofers simple to configure and use.
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Professional Reviews 91/100
Deliciously Crispy
Bass
91/100
Integration
95/100
Dynamics
90/100
Build Quality
93/100
Features Usability
91/100
Value for Money
87/100
The Gravis III brings fast, pitch-defined bass and near-invisible seamless integration to serious music systems, enriching main speakers with tactile depth rather than brute-force excess. HomeTheaterHifi praised its musical precision and sophisticated calibration, while SoundStage Solo found its tight, forceful response equally compelling for films. Leather-and-wood craftsmanship completes this elegant sealed subwoofer.
What Reviewers Are Saying
Pros
Exceptionally fast, tight and pitch-defined bass gives music real depth without blurring individual notes.
Blends seamlessly with main speakers, creating a convincing single full-range presentation.
Comprehensive app-based setup includes effective Auto EQ, parametric EQ, crossover, phase and presets.
Premium leather, wood and heavily built cabinet make it unusually elegant and luxurious for a subwoofer.
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Cons
Its single 10-inch sealed design lacks the ultimate sub-20Hz extension and large-room output of bigger or dual-subwoofer systems.
Compression becomes audible when pushed toward very high playback levels.
Most adjustments rely on the app, whose Auto EQ measurement workflow and saved-setting behavior drew usability criticism.
Assessments of Build Quality, Usability, and Overall Propositions.
Bass
91/100
Reviewers found the Gravis III unusually capable for a sealed 10-inch subwoofer, with measured output extending to roughly 22-25Hz and excellent definition between deep-bass notes. It is praised for fast, tight, musical bass and strong LFE performance, though one reviewer heard compression at the driver’s limits and noted that it cannot match a larger dual-subwoofer reference system’s ultimate output.
Integration
95/100
Integration is a standout: HomeTheaterHifi heard “no sense of a subwoofer running,” describing the system as a single full-range speaker. SoundStage Solo likewise called its blend with minimonitors “perfect” and said the output could be seamlessly blended with small speakers.
Dynamics
90/100
The Gravis III is consistently described as fast, crisp, and forceful, with impacts that reviewers could physically feel during demanding film scenes. It delivers tight, clean transients and convincing punch, although it has less ultimate headroom than a larger reference dual-sub setup and can compress when pushed to its limits.
Build Quality
93/100
Construction earns emphatic praise, from the extensively braced 1.25-inch HDF enclosure to the leather wrap, hand-finished wood top, metal grille posts, and substantial rear-panel hardware. HomeTheaterHifi calls the overall construction excellent, down to the satisfyingly tactile volume control.
Features Usability
91/100
The Gravis app provides unusually comprehensive setup tools, including Auto EQ, four presets, variable crossover and phase, delay, auto-on threshold adjustment, and eight-band parametric EQ. Reviewers found pairing straightforward and Auto EQ effective, though most adjustments require the app rather than rear-panel controls; an initially distracting Bluetooth-status light was addressed by firmware.
Value for Money
87/100
At $2,750-$2,995, reviewers acknowledge that the price is steep for a single 10-inch subwoofer, particularly for buyers seeking very deep subsonic extension or huge-room output. However, HomeTheaterHifi considers it worth the money for the right buyer because of its finish, design, and exceptional ability to improve a music system’s full-range coherence.
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Authorized dealers for Sonus Faber Gravis III
- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
- ABSOLUTE ADOBE — in-store — Port Erin, Port Erin, United Kingdom (website)
- Absolute Sound (SG) — online and in-store — Singapore, Singapore (website)
- Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
- Ahead Stereo — in-store — Los Angeles, California, United States (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- Anquan — online and in-store — Glika Nera, Greece (website)
- Arctic Audio — in-store — Fargo, North Dakota, United States (website)
- Area 51 Audio Visual Engineering — in-store — Tucson, Arizona, United States (website)
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