GRAS 43AA Ear Simulator Kit According to IEC 60318-1 & -2

The GRAS 43AA is a complete test jig for acoustical measurements on telephone handsets and earphones in accordance with:

• IEC60318-1 & -2 Electroacoustics – Simulators of human head and ear – Part 1: Ear simulator for the calibration of supraaural earphones, 1998-07
• ITU-T Recommendation P.57 (08/96) Series P: Telephone transmission Quality, Objective measuring apparatus: Artificial Ears

It consists of the following components:

• IEC 60318-1 & -2 GRAS RA0039 Ear Simulator 
• GRAS 40AG ½” Pressure Microphone 
• GRAS 26AC ¼” Preamplifier
• GRAS RA0052 Test Jig
• Mounting plates for circum-aural and supra-aural headphones

The Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.

A prepolarized version is available, GRAS 43AA-S2.

A version with a GRAS 26AB. Preamplifier is available, GRAS 43AA-S3.