G.R.A.S. RA0057 High-leak Pinna Simulator according to ITU-T Rec. P57 Type 3.2

Volume: Complex


The RA0057 High-leak pinna simulator is used for tests which simulate a telephone or handset held slightly away from the listeners ear.

The RA0057 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 comfortably against the listeners ear use the RA0056 Low-leak pinna simulator.

Quality & Warranty

G.R.A.S. 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 BNC
Resonance frequency kHz 1570
Coupler volume Complex
Temperature range, operation °C / °F 0
Temperature coefficient @250 Hz dB/°C / dB/°F 0 to 95
ITU-T recommondations P.57
CE/RoHS compliant/WEEE registered Yes/Yes, Yes
Weight g / oz 135 / 4.76

Frequency response

Impedance response

G.R.A.S. Sound & Vibration reserves the right to change specifications and accessories without notice.