Garmin GMA 350c Audio Panel

Part No: 010-00871-41

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The first truly all-digital audio panel, the GMA 350 introduces a number of new technologies to the cockpit, including Telligence™ Voice Command, 3-D audio processing and advanced auto squelch.

Listen in Virtual 3-D

What is 3-D audio?

Advanced processing in the GMA 350 adjusts audio in the headset to mimic how the human ear normally hears and registers sounds in space. 3-D Audio makes it seem like different audio sources are coming from different directions so you can easily distinguish one source from many. For example, COMM 1 will seem like it's coming from the left while COMM 2 will seem like it's coming from the right.

Operate Hands Free

With built-in Telligence Voice Command, the GMA 350 helps decrease pilot workload. Operate your audio panel without taking your hands off the controls. To switch between COMMs, just press a button and say “MIC 1” or “MIC 2.”

Distribute Audio in the Cockpit

The GMA 350 makes in-flight entertainment easy. Permanently wire 2 dedicated input sources into the rear connectors, such as an XM receiver and an auxiliary music device. Plug your portable audio devices (such as MP3 players or mobile phones) into the 3.5 mm jack on the front. Control which headset positions have access to which audio sources with the “blue-select” mode so your passengers can enjoy music while you listen to radio communications or make private full-duplex telephone calls. The intuitive front panel layout features cursor control and volume indicator for easy operation.

Advanced Auto Squelch & Automatic Volume Control

Advanced auto squelch automatically adapts to a quiet or noisy cockpit without clipping words or cutting out in the middle of phrases. An internal microphone also senses ambient noise and adjusts the cockpit speaker volume level accordingly. The system analyzes ambient noise level and adjusts volumes for the headsets (when configured to do so at the time of installation), making alerts quieter when you're on the ground.

Advanced Features

A split COMM mode lets the pilot and copilot broadcast on independent frequencies. The automatic digital voice recorder continuously captures the last 2.5 minutes of audio for playback, so you can go back and listen if you miss an ATC call or frequency assignment.

Hands-free Convenience

The GMA 350c offers all the technology of the GMA 350 audio panel and adds the convenience of Bluetooth® wireless connectivity with your mobile and compatible portable devices, so you can distribute music or telephone audio through your aircraft audio panel wirelessly. And, with the VIRB® XE Aviation Bundle, Bluetooth works in place of a headset audio cable to overlay cockpit audio, such as radio and intercom, onto your video.

  • All-Digital Bluetooth Audio Panel 
  • Incorporates patented features and superior voice control
  • Designed for fixed-wing aircraft and helicopters
  • Incorporates Bluetooth technology for wireless access to music, phone, Garmin Pilot™ alerts
  • Industry first Telligence™ Voice Command technology and 3D Audio processing
  • Enhanced auto squelch capability
  • Intuitive front panel layout with cursor control and volume indicator
  • 6 to 7 position intercom: pilot, copilot, and 4 or 5 passengers
  • 3 stereo headset amplifiers: pilot, copilot and passengers
  • 2 stereo music source inputs
  • 5 selectable intercom operational modes
  • Independent pilot, copilot and passenger volume controls
  • Individual VOX processing for each mic input
  • Automatic selection of radio audio source when corresponding mic is selected
  • Split COMM transceiver function. Copilot may transmit and receive on one COMM while pilot transmits and receives on another.
  • Voice recognition
  • Automatic audio adjustment for ambient noise
  • 3-D Audio
  • Marker beacon receiver with lamp driver outputs


  • GMA 350c Audio Panel
  • Rack
  • Backplate
  • Connector kit
  • DIMENSIONS:  6.25"W x 1.30"H x 7.80"D WEIGHT: 2.4 lb
    TELEPHONE INTERFACE:  dedicated full-duplex tel interface (no PTT keying required) ICS:  6 to 7 position intercom (individual VOX processing for each mic position)
    ICS ISOLATION MODES: 5 - all, Pilot, Copilot, Crew/Pass, None TRANSCEIVERS:  2 - COM1, COM2
    MUSIC INPUT IMPEDANCE: Rear pins: 600 Ohms, front panel jack: 5 kOhms MUSIC FREQUENCY RESPONSE: 20Hz - 20kHz

    28V aircraft - 10W into 4 Ohms, 7W into 8 Ohms; 14V aircraft - 3W into 4 Ohms

    PA FUNCTION: Pilot selectable - requires pressing & holding SPKR button to change state
    MARKER BEACON: dual sensitivity MANUAL SQUELCH: Yes
    INTERCOM VOLUME CONTROLS: Yes MANUAL VOX LEVEL CONTROLS: 1 (shared threshold, individual processing)
    ADDITIONAL: Includes marker, AUX & speaker volume controls; also features 3D spatial audio & automatic speech recognition
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