Garmin GMA 340 Audio Panel – Aircraft Intercom & Audio Control Unit 14/28 VDC – Fully Tested Working

Condition: Fully Tested / Removed in Working Order

The Garmin GMA 340 Audio Panel is a trusted, industry-standard intercom and audio-management system designed for both 14 V and 28 V aircraft electrical systems. It delivers crystal-clear communication between crew and passengers, integrates with GPS NAV/COM radios, and supports multiple inputs for navigation and entertainment audio.

✈️ Key Features

• Six-Place Intercom: Independent pilot/co-pilot isolation modes

• Dual Audio Inputs: Seamlessly connects COM1, COM2, NAV1, NAV2, ADF, DME and AUX inputs

• Marker Beacon Receiver: Built-in 75 MHz with audio and lamp indicators

• Independent Volume Controls: Pilot, co-pilot, and passenger mic adjustments

• Fail-Safe Feature: Direct pilot COM1 connection in event of power loss

• Lighting: Compatible with 14/28 V dimming buses

• Construction: Rugged panel-mount design for long-term avionics use

📦 Includes

• Garmin GMA 340 Audio Panel (Main Unit Only)

• Rack & Connector Kit (if applicable)

• Pilot Operating Guide (PDF available upon request)

⚙️ Specifications

• Power Input: 14 / 28 V DC

• Dimensions: 1.30 in H × 6.25 in W × 7.11 in D

• Weight: 1.4 lb (0.64 kg)

• Mounting: Standard 6.25-inch avionics stack