Sony Headphones Class Action: WH-1000XM5 Hinge Defect

The Sony WH-1000XM5 class action lawsuit accuses Sony of selling its flagship noise-cancelling headphones with a defectively designed hinge that cracks under normal use, and of routinely refusing warranty coverage by calling the breakage user damage. The case was filed in November 2025 in the Southern District of New York, but in April 2026 a judge sent it to individual arbitration, so there is currently no settlement, no claim form, and no payout for consumers.¹

What the Lawsuit Says Is Wrong With the Headphones

The WH-1000XM5 retails for roughly $370 to $400. The complaint focuses on the swivel hinge where each earcup meets the headband arm. According to the filing, that mounting point is “poorly secured,” and the normal swiveling motion places excessive stress on the plastic housing around the joint. Over time the internal plastic fractures, deforms, or separates, and one or both earcups eventually detach from the frame entirely.²

The problem appears to be widespread. A reader poll by the audio publication SoundGuys found that 28% of roughly 2,400 respondents reported that their XM5 headband or hinge had broken. The publication noted a “concerning looseness” in the hinge that often precedes complete failure, and suggested the XM5’s shift to recycled plastics may have compromised the structural integrity of the joint. It also pointed to a geometry issue: the XM5 uses a straight, flat connection with a convex curve under the hinge, which may concentrate stress at the failure point.³

FCC filings for the successor WH-1000XM6 show a redesigned hinge with a concave shape and an additional supporting seam, changes the plaintiff cites as evidence that Sony recognized the weakness in the XM5.³

How Sony Has Handled Warranty Claims

The second half of the complaint is about what happens when owners ask Sony to fix the problem. The lawsuit alleges Sony has been aware of the widespread hinge failures and has systematically denied warranty claims by classifying the breakage as “user-caused physical or accidental damage” rather than a manufacturing defect, even for units still inside the warranty period.²

Owners who contact Sony support are told the damage does not qualify as an internal manufacturing defect and are directed to authorized service partners for paid repairs. Some consumers have reported quotes of around $100. Others have faced out-of-warranty repair charges of up to $370, which is nearly the full retail price of the headphones.⁴

Sony’s general limited warranty covers defects in material or workmanship and limits the company’s obligation to replacing the product or refunding the purchase price, with liability capped at the actual purchase price and consequential damages disclaimed.⁵ The named plaintiff, Ian Kanter, says he contacted Sony on September 12, 2025 after the plastic at his headband hinge fractured and the earcup separated. Sony denied coverage on September 15 and again on September 22, calling it “physical damage,” and declined to offer a discount on a replacement.⁶

What the Lawsuit Asks For and Who It Covers

The case names Sony Corporation of America and Sony Electronics Inc. as defendants and brings six causes of action: breach of express warranty, breach of the implied warranty of merchantability, fraudulent concealment, unjust enrichment, violations of New York General Business Law and the Nevada Deceptive Trade Practices Act, and violations of the federal Magnuson-Moss Warranty Act.²

Kanter seeks to represent a nationwide class of WH-1000XM5 buyers, with subclasses for purchasers in New York and Nevada. The complaint requests a jury trial, an injunction requiring Sony to fix or replace the defective headphones, and actual, statutory, punitive, and treble damages.²

One boundary worth noting: the lawsuit covers only the WH-1000XM5. Some owners have reported similar hinge failures on the older XM4, but that model is not part of this case.⁷

Where the Case Stands Now

The complaint was filed on November 20, 2025 in the U.S. District Court for the Southern District of New York, as case number 1:25-cv-09691-AS before Judge Arun Subramanian.⁷

Instead of answering or moving to dismiss, Sony moved on April 3, 2026 to compel arbitration, arguing the dispute belonged in individual arbitration rather than a class action in court. Kanter did not oppose the motion and consented to arbitration.⁸ On April 24, 2026, Judge Subramanian granted the motion as unopposed and stayed the case while arbitration proceeds.¹

Practically, that means the federal court case is paused. The named plaintiff’s individual claim will be resolved privately, and whether the broader class claims survive or whether other consumers file separate actions is not yet known. There is no settlement to join, no claim form to submit, and no money available to XM5 owners through this lawsuit at this time.

What You Can Do If Your XM5 Hinge Has Broken

Because the lawsuit is stayed, the near-term options for an owner with a cracked or detached earcup lie outside the case. Contact Sony support and document every response, including any classification of the damage as user-caused. Keep your proof of purchase, photos of the fracture, and repair quotes if you receive them. If Sony directs you to an authorized service partner, the reported out-of-pocket cost has ranged from about $100 to as much as $370.⁴ If the litigation moves back into court or a settlement is later reached, that documentation is what a claim would be built on.

1
CourtListener. Kanter v. Sony Corporation of America
2
Top Class Actions. Sony Class Action Claims Company Sells Headphones With Defective Hinges
3
SoundGuys. The Sony XM6 Must Fix This Achilles Heel of the WH-1000XM5
4
Migliaccio & Rathod LLP. Sony WH-1000XM5 Headphones Hinge Investigation
5
Sony. Sony Electronics Limited Warranty
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Open Class Actions. Sony Headphones Class Action Lawsuit Complaint
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Open Class Actions. Sony WH-1000XM5 Headphones Hinge Class Action Lawsuit
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Justia. Kanter v. Sony Corporation of America, Order on Motion to Compel Arbitration