PA3A insert earphone has three parts: a transducer to convert electrical energy to sound, a conduit to deliver the sound into the ear canal, and a coupler connecting the device to the canal.
There are several applications and advantages to using an insert earphone.
PA3A is connectable to all standard audiometers.
PA3A is an option for Twins or Quick audiometers. You can add PA3A to your audiometer and enjoy the ease of masking the thresholds.