NASA's National Aeronautics and Space Administration (NASA) is seeking to procure a Sound Level Calibrator (quantity 1) through a sole source contract with HOTTINGER BRUEL & KJAER INC., the sole provider for this equipment. This procurement is part of a broader initiative to enhance NASA Kennedy Space Center's (KSC) acoustic testing and environmental monitoring capabilities, which also includes additional high-precision microphone measurement equipment. Interested organizations are invited to submit their capabilities and qualifications in writing by 12 p.m. Central Standard Time on December 17, 2025, to the primary contact, Sara Jusino-Terry, at sara.a.jusino-terry@nasa.gov, as the government will evaluate submissions to determine the necessity of competitive procurement.