| Brand | G.R.A.S |
|---|---|
| Type | Ear Simulator |
| Model | 4751 |
| Country of Origin | Denmark |
Check the listing for details. GRAS RA0045 Externally Polarized Ear Simulator According to IEC 60318-4 (60711). Condition: Used, Made in Denmark. Listed at 259.95 USD. …The GRAS RA0045 is an ear simulator with an acoustic input impedance closely resembling that of an average human ear.