The JA39 Low Impedance Headset Adapter - allows a low impedance headset (5 Ohm Mic - 8 Ohm Phones) to be used with a regular aviation audio controller like the Jupiter Avionics Corp. JA95-001. The JA39-001 operates using the Mic Bias supply of the audio controller and requires no other external power.

The JA39 unit features an industry standard TJ-120 headset pin-out to allow plug and play operation.

The metalized plastic case construction allows the adapter to be used in high RF environments. It is particularly suitable for adapting 5 ohm headsets for use with the Jupiter wiJAC Wireless Aircraft Headset Adapter