GRAS RA0056 Low-leak Pinna Simulator according to ITU-T Rec. P57 Type 3.2

Volume: Complex



The RA0056 Low-leak pinna simulator is used for tests which simulate a telephone or handset held comfortably against the listeners ear.

The RA0056 meets the specifications in the ITU-T Recommendation P.57 (08/96) "Series P: Telephone transmission quality, Objective measuring apparatus: Artificial ears".


To simulate a telephone or handset held slightly away from the listeners ear use the RA0057 High-leak pinna simulator.

Quality & Warranty

GRAS accessories are made of stainless steel, alloys and high-quality composites. These items are covered by a 2 year warranty respecting their intended use.
On consumables like batteries, cables and windscreens we offer a 6 month warranty.


Connector type
3 m 7-pin LEMO
Resonance frequency
Humidity range non condensing
% RH
0 to 95
ITU-T recommondations
CE/RoHS compliant/WEEE registered
Yes/Yes, Yes
g / oz
135 / 4.76
Specification Conditions

Frequency response

Impedance response

GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.

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