The GARMIN GMA-340 Audio Panel Stereo Intercom is a high-quality aviation product manufactured by Garmin in the United States. This audio panel is designed for use with avionics systems and is compatible with a range of aircraft. 

GARMIN GMA-340 Audio Panel, Marker Beacon Receiver, and Stereo Intercom

In excellent working condition:  All lights and buttons work with no issues.

Removed for panel upgrade this month. 2026

Garmin Pilot’s Guide

Inspected by Garmin factory in 2021, see attached photo