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Part# 11-12196
MFR Model# 010-00831-21


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

Designed for use with the GTN 750 series touchscreen navigators, the GMA 35 remote audio processor features next-generation capabilities such as advanced auto squelch and record/playback functionality.

Streamline Cockpit Communications
The GMA 35 fits securely behind your GTN 750 series, leaving more room for the large display avionics. Just touch the onscreen “Audio Panel” or “Intercom” button to access those controls.

Distribute Audio with Ease
The GTN 750 series graphically shows you who’s MIC is on and off, and offers independent volume control for the pilot, copilot and passengers. The GMA 35 features 2 dedicated stereo entertainment audio inputs, so passengers can listen to SiriusXM Satellite Radio or other entertainment sources while you keep your headset tuned to radio communications.

Experience Advanced Processing
The system offers 3 COMM support, as well as a flexible split COMM mode that allows the pilot and copilot to broadcast on separate COMMs. For example, the pilot can use COMM 1 while the co-pilot uses COMM 2, or the pilot can use COMM 2 while the co-pilot uses COMM 1.

The auto squelch capability automatically adapts to a quiet or noisy cockpit without clipping words or cutting out in the middle of phrases. If you miss an ATC call or frequency assignment, the built-in automatic digital voice recorder captures the last 2.5 minutes of audio for playback. Automatic volume control analyzes the ambient noise level and adjusts the audio volume level in your cockpit speaker, so system alerts won’t be quite as loud when you’re on the ground.

Enjoy Future Capabilities
The GMA 35 and GTN 750 series support future software upgrades that will bring more cutting-edge audio capabilities to your cockpit. Telligence™ Voice Command features will optionally allow you to switch between COMMs with the touch of a button on the aircraft flight control and saying “COMM 1” or “COMM 2” (as well as other select functions). A unique 3-D Audio feature will make it seem as though different audio sources are coming from different directions around you, so discerning between them becomes much easier.


  • Remote mounted for use with the GTN 750 series
  • 6 or 7 position intercom: pilot, copilot, 4 or 5 passengers
  • 3 stereo headset amplifiers: pilot, copilot and passengers
  • 2 stereo music source inputs
  • Up to 8 selectable intercom operational modes with synoptic intercom routing
  • Independent pilot, copilot and passenger intercom volume controls
  • Individual VOX processing for each MIC input
  • Automatic selection of radio audio source when corresponding MIC is selected
  • Automatic volume adjustments based on ambient sound levels
  • Flexible split COMM transceiver function. Copilot may transmit and receive on one COMM while pilot transmits and receives on another.
  • Marker beacon receiver


Physical & Performance
  • Unit dimensions, WxHxD: 6.29"W x 1.3"H x 7.79"D (16 x 3.3 x 19.8 cm)
  • Weight: 2.4 lb (1.1 kg)
Other Specs
  • Telephone interface: dedicated full-duplex tel interface (no PTT keying required)
  • ICS (intercom system): 6 to 7 position intercom (individual VOX processing for each of the mic positions)
  • ICS isolation modes: 8 - synoptic graphical selection
  • Transceivers: 3 - COM1, COM2, COM3
  • Additional receiver inputs: 5 - NAV1, NAV2, (RCVR3), (RCVR4), (RCVR5)
  • Music source input: 2 Stereo music source inputs
  • Music input impedance: 600 Ohms
  • 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: yes
  • 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: 3 (pilot, co-pilot/passengers)
  • 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


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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 the Garmin GMA 35 unit work with a Garmin G3X touch?

The GMA 35 will not work with a G3X touch. A GMA 240 or GMA 245 will interface with a G3X touch system.

Q: Is the GMA 35 able to be controlled via a GNX 375?

Per Garmin, you can connect them for audio but it is not designed to be controlled by other units.

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