The Department of Veterans Affairs Phoenix Healthcare System seeks to purchase one Vestibular Diagnostic Suite (brand name or equal to Interacoustics VisualEyes 525 with Orion Auto-Traverse Rotational Chair) for assessing vestibular and balance disorders. The system must integrate VNG, vHIT, and rotational chair tests through its own software to provide a complete analysis of peripheral and central vestibular function. Performance of services is at the Phoenix Healthcare System, with shipping terms FOB Destination included in the unit cost. The contractor must be an OEM, authorized dealer, distributor, or reseller verified by a signed letter from the manufacturer. A firm-fixed-price contract will be awarded, with questions due by July 7, 2026, and responses due by July 15, 2026.