Garmin GMA 350 6 Place Digital Audio Panel

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Part# 11-09667
MFR Model# 010-00871-21


Note: Per Garmin we cannot sell the GMA 350 to certified aircraft. For experimental aircraft please fill out the wire harness form below.

The first truly all-digital audio panel, Garmin’s GMA 350 introduces a number of new technologies to the cockpit, including voice recognition, 3-D audio processing, advanced auto squelch and more.

Operate Hands Free
With built-in voice recognition, the GMA 350 helps decrease pilot workload. You can now operate your audio panel without taking your hands off the controls. To do something like switching between COMs, just press a dedicated “push to command” button on the flight controls and say “MIC 1” or “MIC 2.”

Listen in Virtual 3-D
Advanced processing in the GMA 350 adjusts audio in the headset to mimic how the human ear normally hears and registers sounds in space. This 3-D Audio feature makes it seem as though different audio sources are coming from different directions around you. Now it's much easier to focus on and understand one particular source from among many. For example, COM 1 will seem to be coming from the left while COM 2 may seem to be coming from the right.

Distribute Audio Around the Cockpit
The GMA 350 makes in-flight entertainment easy. The system allows you to permanently wire up to two dedicated input sources into the rear connectors, like your XM® satellite music receiver and an auxiliary music device. A 3.5 mm jack on the front also provides easy access for portable audio devices like MP3 players or mobile phones. With the GMA 350’s “blue-select” mode, the pilot can control which headset positions have access to which audio sources – your passengers can enjoy music while you listen to radio communications or make private full-duplex telephone calls. The system’s intuitive front panel layout features cursor control and volume indicator for easy operation.

Experience Advanced Auto Squelch and Automatic Volume Control
The auto squelch capability in the GMA 350 has been radically redesigned and 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. By analyzing the ambient noise level, the system can also adjust audio volumes for the headsets (when configured to do so at the time of installation). This means your system alerts won't be so loud while you're still on the ground.

Enjoy Advanced Features
A handy split COM mode allows the pilot and copilot to select independent frequencies to broadcast on. And should you ever miss an ATC call or frequency assignment, don’t worry -- Garmin’s automatic digital voice recorder is also built in, which continuously captures the last 2.5 minutes of audio for playback.


  • Intuitive front panel layout with cursor control and volume indicator
  • Six/Seven position intercom: pilot, copilot, four or five passengers
  • Three stereo headset amplifiers: pilot, copilot, and passengers
  • Two stereo music source inputs
  • Five 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 COM transceiver function. Copilot may transmit and receive on one COM 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


  • Physical dimensions 6.25”W x 1.30”H x 7.80”D (15.9 x 3.3 x 19.8 cm)
  • Weight 2.4 lb (1.1 kg)
  • Telephone interface dedicated full-duplex tel interface (no PTT keying required)
  • ICS (intercom system) 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
  • Additional receiver inputs 5 - NAV1, NAV2, AUX1, AUX2, AUX3
  • Music source input 2 stereo music source inputs
  • Music input impedance rear pins: 600 Ohms; front panel jack: 5 kOhms
  • Music frequency response 20Hz - 20kHz
  • Speaker output 28V aircraft — 10W into 4 Ohms, 7W into 8 Ohms; 14V aircraft — 3W into 4 Ohms
  • PA function pilot selectable — requires pressing and holding SPKR button to change state
  • Marker beacon dual sensitivity
  • Manual squelch Yes
  • Automatic squelch Yes
  • SmartMute (includes SmartMute marker audio muting) Yes
  • Intercom volume controls Yes
  • Manual VOX level controls 1 (shared threshold, individual processing)
  • Avionics squelch (squelch processing for noise reduction) Yes
  • Split com (CoPilot transmits and receives on Com2 while Pilot transmits and receives on Com1) Yes
  • Failsafe (connects Pilot PTT, mic and headset to COM1 if unit is turned off) Yes
  • Clearance recorder Yes
  • Alert/Unswitched inputs 5
  • Front panel jack yes (3.5mm - smartphone compatible)
  • Front panel music volume control yes (music and telephone volume controls)
  • TSO Authorization yes
  • Additional includes marker, AUX and speaker volume controls; also features 3D spatial audio and automatic speech recognition.
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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does Push to Command button come with unit in the installation kit?

No. There are no buttons included.

Q: Can this 6-place audio panel be used in a 4-place aircraft? Just not wire in the last two sets of jacks?

Yes, that is possible to do.

Q: Hi, I have a Cessna 1978, I want to update it to a GMA 350, but on the description say it just can be sold for experimental use... does it means that I cant keep the aircraft certified as non experimental once installed? TIA!

Garmin only sells the certified version through their installers, we can only sell the experimental version. You would need to find an avionics shop near you that is a Garmin dealer. It is FAA Approved for certified but cannot be sold over-the-counter.

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