GRAS RA0157 Calibration Adapter for 711-Style Ear Simulators in Test Fixtures

Adapter for GRAS Pistonphone 42AA/42AP for calibration of 711-style ear simulators such as GRAS RA0045 when mounted on a GRAS KEMAR (45BB/45BC), 45CB, 43AG or 45CA test fixtures using an ear canal extension.