This is a Request for Information (RFI) for market research only, not a solicitation, to identify potential suppliers for an Acoustic Test Fixture System and associated services. The system must have specific anthropometric features, including two symmetrical simulated ears with detailed specifications for materials, dimensions, and performance standards. The work is for the Defense Health Agency Contracting Activity located at Fort Detrick, Maryland. Responses are limited to five pages and must be submitted via email by 12:00 PM Eastern Time on 2 April 2026. The government will not award a contract or pay for information based on this RFI.