Devialet

Repair, Service, and Parts

Devialet repair, service, and parts

Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.

Le Châtelet-en-Brie, France
Manuf. Location
≈ US $80M
Annual Revenue (est)
Premium Audio
End Use Segment

Devialet SA is a French premium audio OEM specializing in high-performance consumer acoustic products and proprietary audio technologies. Founded in 2007, the company designs and manufactures connected loudspeakers, amplifiers, portable speakers, wireless earbuds, and soundbars, including its best-known Phantom speaker family, Astra amplifiers, Mania portable speakers, Gemini earbuds, and Dione soundbar. Devialet is particularly known for combining compact industrial design with high sound-pressure output, low distortion, and proprietary acoustic/electronic engineering. The company reports more than 250 proprietary technologies and over 100 international awards, while also licensing and integrating its acoustic technology into products for partner manufacturers. Devialet

2 Most Seen Failures:

[Wi-Fi / Network Connectivity Failure]

Phantom I, Phantom II, Dione, and other networked Devialet products may disappear from the Devialet app, fail discovery or setup, or repeatedly lose their network connection. Reboots, factory resets, moving closer to the router, or temporarily using Ethernet are common troubleshooting steps.

[Bluetooth Pairing / Earbud Synchronization Failure]

Gemini earbuds and Devialet speakers can fail to pair, repeatedly disconnect, or have only one Gemini earbud connect correctly. Gemini firmware updates can also fail when the phone is not correctly paired with both earbuds.

[Charging / Charging-Case Contact Failure]

Gemini I and II earbuds may fail to charge when seated in the case, while the case may fail to recognize insertion or removal of one or both earbuds. Dirty or unreliable electrical contacts between the earbuds and charging case are a documented contributor.

[HDMI ARC/eARC Dropout or No-Sound Failure]

Dione can lose its HDMI ARC/eARC audio connection, stop producing TV sound, or fail to recognize the HDMI signal until the soundbar is restarted. Owner reports show this as a recurring Dione problem, although TV compatibility, cables, settings, and firmware can also cause or aggravate it.

[Firmware Update / Post-Update Failure]

Firmware installation can fail or leave a Devialet device partially functional, particularly during Gemini earbud/case updates and some Dione updates. Symptoms include update error codes, failed pairing, an apparently inactive charging case, or loss of previously working connectivity.

[Phantom Power / Boot Failure]

Phantom speakers can develop an internal fault that leaves the unit unable to start, complete its boot sequence, or respond normally after power is connected. Persistent electronic faults generally require workshop diagnosis or repair rather than an app-level reset.

[Low or Unbalanced Earbud Output]

Gemini users can experience dramatically reduced output from one earbud or unequal left/right volume. Devialet specifically identifies low output from one or both earbuds as a condition that can result from contamination or blockage and recommends cleaning as part of diagnosis.

[Expert / Expert Pro Protection or Internal Hardware Fault]

Expert and Expert Pro amplifiers can stop during operation, enter protection behavior, or report a stored "Last Fault/Last Error." Persistent faults across inputs and both speaker channels after configuration and cable checks can indicate an internal hardware problem.

[Expert / Expert Pro Thermal or Filter-Board Failure]

Expert amplifiers rely on passive cooling and can become very hot, particularly when ventilation is inadequate. Devialet specifically documents burning-smell cases as potentially related to a filter-board problem following exposure to high temperatures and recommends service intervention.

1 Acme Revival offers repair, service, and part rebuild opportunities for most Devialet devices.

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  1. 1 Repairs are performed on a best-effort basis. Acme Revival utilizes a network of sophisticated technicians and engineers with diverse service offerings; despite this, factors that influence the repair outcome may ultimately prove unsuccessful. Acme Revival makes no claim that it can, guarantee a repair before your device is sent in for diagnostic evaluation; even then, repair and diagnostic work are not mutually exclusive. Despite well-intentioned quoting, repairs may still prove unsuccessful.
  2. 2 Per information known, researched and collected by Acme Revival and its systems at time of page publishing (September 25, 2026).
  3. *Information regarding this manufacturer/brand/organization is estimated with information collected and known to Acme Revival. This information is intended to provide insights into the spotlight entity, however may not be accurate— information is strictly of estimate nature only.
  4. **The model list shown here may not be an all-inclusive list of the EcoFlow product range. Model list has been derived per information known, researched and collected by Acme Revival and its systems for the US market.