KOSS CORP

To the Board of Directors

Koss Corporation and Subsidiaries

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Koss Corporation and Subsidiaries (the “Company”) as of June 30, 2026 and 2025, and the related consolidated statements of operations, comprehensive loss, stockholders’ equity, and cash flows for the years ended June 30, 2026 and 2025, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of June 30, 2026 and 2025, and the results of its operations and its cash flows for the years ended June 30, 2026 and 2025, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements 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 audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits 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 the significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

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: (1) relate to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgements. The communication of the critical audit matter 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 they relate.

Deferred Compensation

As described in Note 11 to the consolidated financial statements, the Company has a deferred compensation agreement with a current officer as of June 30, 2026 and 2025, which is measured at its estimated net present value. The principal consideration for our determination that deferred compensation should be a critical audit matter was based on the subjective nature of the assumptions estimated and used by management to calculate the deferred compensation liability. Assumptions subject to estimate included discount rates, mortality rates, and future retirement date. Changes to these assumptions may have a material impact on the consolidated financial statements.

The primary audit procedures we performed to address this critical audit matter included:

We tested the design of controls over the Company’s process for accounting and recording the deferred compensation liability.

We evaluated management’s calculation methodology and its compliance with accounting principles generally accepted in the United States of America regarding deferred compensation liabilities.

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We tested the discount and mortality rate assumptions used by management to calculate the deferred compensation liability by independently determining our own assumptions based on the relevant facts and circumstances and recalculating the deferred compensation liability utilizing those assumptions.

We confirmed with the current officer his expected retirement date.

/s/Wipfli LLP

PCAOB ID 344

We have served as the Company’s auditor since 2019.

Radnor, Pennsylvania

August 28, 2026

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