Business Overview and Basis of Presentation	9 Months Ended
Jun. 28, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Overview and Basis of Presentation	1. Business Overview and Basis of Presentation Description of business Sonos, Inc. and its wholly owned subsidiaries (collectively, "Sonos," the "Company," "we," "us" or "our") designs, develops, manufactures, and sells audio products and services. The Sonos sound system provides customers with an immersive listening experience created by the design of its speakers, headphones and components, a proprietary software platform, and the ability to stream content from a variety of sources over the customer’s wireless network or over Bluetooth. The Company’s products are sold through third-party physical retailers, including custom installers of home audio systems, select e-commerce retailers, and its website, sonos.com. The Company’s products are distributed in over 60 countries through its wholly owned subsidiaries: Sonos Europe B.V. in the Netherlands, Beijing Sonos Technology Co. Ltd. in China, Sonos Japan GK in Japan, and Sonos Australia Pty Ltd. in Australia. Basis of presentation and preparation The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet as of September 28, 2024, has been derived from the audited consolidated financial statements of the Company. The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual financial statements. They should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended September 28, 2024, (the "Annual Report"), filed with the SEC on November 15, 2024. In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations, and its cash flows for the interim periods presented. The results of operations for the three and nine months ended June 28, 2025, are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company operates on a 52- week or 53- week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the fourth quarter of the Company’s fiscal year ended October 3, 2020, and will reoccur in the fiscal year ending October 3, 2026. The nine months ended June 28, 2025 and June 29, 2024, spanned 39 weeks each. As used in this Quarterly Report on Form 10-Q, "fiscal 2025" refers to the fiscal year ending September 27, 2025 and "fiscal 2024" refers to the fiscal year ended September 28, 2024. Use of estimates and judgments The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends.

Sonos, Inc. and its wholly owned subsidiaries (collectively, "Sonos," the "Company," "we," "us" or "our") designs, develops, manufactures, and sells audio products and services. The Sonos sound system provides customers with an immersive listening experience created by the design of its speakers, headphones and components, a proprietary software platform, and the ability to stream content from a variety of sources over the customer’s wireless network or over Bluetooth.

The Company’s products are sold through third-party physical retailers, including custom installers of home audio systems, select e-commerce retailers, and its website, sonos.com. The Company’s products are distributed in over 60 countries through its wholly owned subsidiaries: Sonos Europe B.V. in the Netherlands, Beijing Sonos Technology Co. Ltd. in China, Sonos Japan GK in Japan, and Sonos Australia Pty Ltd. in Australia.

The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet as of September 28, 2024, has been derived from the audited consolidated financial statements of the Company.

The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual financial statements. They should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended September 28, 2024, (the "Annual Report"), filed with the SEC on November 15, 2024.

In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations, and its cash flows for the interim periods presented. The results of operations for the three and nine months ended June 28, 2025, are not necessarily indicative of the results to be expected for the full fiscal year or any other period.

The Company operates on a 52- week or 53- week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the fourth quarter of the Company’s fiscal year ended October 3, 2020, and will reoccur in the fiscal year ending October 3, 2026. The nine months ended June 28, 2025 and June 29, 2024, spanned 39 weeks each. As used in this Quarterly Report on Form 10-Q, "fiscal 2025" refers to the fiscal year ending September 27, 2025 and "fiscal 2024" refers to the fiscal year ended September 28, 2024.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends.