Sonos Inc

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Sonos, Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Sonos, Inc. and its subsidiaries (the “Company”) as of September 28, 2024 and September 30, 2023, and the related consolidated statements of operations and comprehensive income (loss), of stockholders’ equity and of cash flows for each of the three years in the period ended September 28, 2024, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of September 28, 2024, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of September 28, 2024 and September 30, 2023, and the results of its operations and its cash flows for each of the three years in the period ended September 28, 2024 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of September 28, 2024, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Annual Report on Internal Control Over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition – Estimates of Standalone Selling Price and Service Period for Unspecified Software Upgrades and Cloud-Based Services

As described in Notes 2 and 6 to the consolidated financial statements, the Company’s contracts with customers generally contain promises to transfer products and services which are not sold separately. Service revenue includes revenue allocated to (i) unspecified software upgrades and (ii) cloud-based services, which are each distinct performance obligations, based on relative standalone selling price. Management’s estimation of standalone selling price requires judgment. Management has disclosed factors considered in estimating standalone selling price including competitive pricing information, where available, analyses of the cost of providing the products or services plus a reasonable gross margin, the nature of the products and services and the expected level of future services. Determining the revenue recognition period for unspecified software upgrades and cloud-based services also requires judgment. Management recognizes revenue attributable to these performance obligations ratably over the estimated service period. In developing the estimated service period over which to recognize service revenue, management considers past history, plans to continue to provide services, including plans to continue to support updates and enhancements to prior versions of the Company’s products, expected technological developments, obsolescence, competition and other factors. Deferred revenue primarily relates to revenue allocated to unspecified software upgrades and cloud-based services and was $81.5 million as of September 28, 2024.

The principal considerations for our determination that performing procedures relating to revenue recognition, specifically estimates of standalone selling price and service period for unspecified software upgrades and cloud-based services, is a critical audit matter are the significant judgment by management in estimating the standalone selling price and the service period, which in turn led to significant auditor judgment, subjectivity, and audit effort in performing procedures and evaluating audit evidence relating to (i) management’s estimates of standalone selling price by considering estimates of the cost of providing the services plus a reasonable gross margin, and (ii) management’s estimates of service period by considering management’s plans to continue to support updates and enhancements to prior versions of the Company’s products.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the revenue recognition process, including over the estimation of the standalone selling prices and service period for unspecified software upgrades and cloud-based services. The procedures also included, among others, testing management’s process for estimating the standalone selling price and service period. Procedures to test management's process for estimating standalone selling price included (i) evaluating the appropriateness of management’s cost plus gross margin method of estimating standalone selling price; (ii) comparing the estimate of standalone selling price to competitive pricing information for comparable services using publicly disclosed information; (iii) evaluating the reasonableness of estimates of the cost of providing the services; and (iv) evaluating the reasonableness of gross margins. Evaluating the reasonableness of estimates of the cost of providing the services involved (i) testing the allocation of engineering costs, which is driven by time spent on software upgrades and cloud-based services and (ii) testing the completeness, accuracy, relevance, and classification of the engineering costs. Evaluating the reasonableness of gross margins involved comparing management’s gross margin to the gross margin earned for similar services by third party peer companies within the same industry. Procedures performed to test management's process for estimating the service period for these services included (i) testing the completeness and accuracy of underlying data and (ii) evaluating the reasonableness of management's plans to continue to support updates and enhancements to prior versions of the Company's products through a look-back analysis performed using historical software updates, as well as considering currently active products receiving software updates.

/s/PricewaterhouseCoopers LLP

Los Angeles, California

November 15, 2024

We have served as the Company’s auditor since 2011, which includes periods before the Company became subject to SEC reporting requirements.