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Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray


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Current Price: 1,047.00 USD Ends in: ended

Garmin GMA340 Audio Panel with built in Intercom.  
Just removed during an avionics upgrade and was in great working and cosmetic condition.  
Comes as is with mounting tray.

Free shipping within the Continental USA!

Garmin GMA340 specs:

Garmin's GMA 340 audio panel meets the needs of aircraft owners and operators who require reliability and versatility in the essential audio switching function. 

The GMA 340 features innovative LED-illuminated push button controls that allow audio selection of both NAV and Comm audio. Large buttons activate the Comm microphone and audios for up to three Comm transceivers to simplify cockpit workload. Another feature of the GMA 340 is the Split Comm, which allows the pilot to transmit/receive on Comm 1 and the co-pilot to transmit/receive on Comm 2. MASQ™ processing reduces ambient noise from the avionics inputs. Comm transmit indication is also provided. Speaker selection is available to monitor the aircraft radios or to make PA announcements. There are two unswitched inputs for telephone ringers, altitude alert warnings, or other warning tones. In addition, the GMA 340 includes a six-place VOX intercom with three selectable modes of isolation, dual stereo music inputs, and independent pilot, co-pilot, and passenger volume control. Each microphone input has a dedicated VOX circuit to ensure that only the active microphone is heard when squelch is broken. Special cabin noise de-emphasis circuitry enhances cockpit communications. Also standard is the three-light Marker Beacon Receiver/Indicator with high/low sensitivity selection and SmartMute™ marker audio muting. 

Surface mount technology provides shallow depth and light weight, which simplifies installation in the tightest aircraft spaces and saves precious panel space. Operation is available in 14 or 28 volts without voltage converters or dropping resistors. Installation is simplified with the built-in intercom and marker beacon, and the GMA 340 also features photo cell dimming of annunciators, pilot fail-safe mode connection to Comm 1, and FAA TSO approval.

Physical & Performance

  • Physical dimensions 6.29"W x 1.3"H x 7.72"D (16 x 3.3 x 19.6 cm)
  • Weight 1.7 lb (.8 kg)

Other Specs

  • Telephone interface tel ringer input, COM3 may be used as keyed (PTT) telephone interface
  • ICS (intercom system) 6 position intercom (individual VOX circuits for each of the 6 mic positions)
  • ICS isolation modes 3 - All, Pilot, Crew
  • Transceivers 3 - COM1, COM2, COM3
  • Additional receiver inputs 4 - NAV1, NAV2, ADF, DME
  • Music source input 2 stereo music source inputs - isolation modes differ from 347
  • Music input impedance 460 Ohms
  • Music frequency response 100Hz - 15kHz
  • Speaker output speaker output for radios or PA function (10W into 4 Ohms or 8 Ohms)
  • PA function pilot selectable - dedicated button
  • Marker beacon dual sensitivity
  • Manual squelch Yes
  • Automatic squelch No
  • SmartMute (includes SmartMute marker audio muting) Yes
  • Intercom volume controls Yes
  • Manual VOX level controls 2 (pilot, co-pilot/passenger)
  • 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 No
  • Alert/Unswitched inputs 2
  • Front panel jack no
  • Front panel music volume control no
  • TSO Authorization yes



Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray
Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray
Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray Garmin GMA340 011-00401-10 Audio Panel with Intercom Avionics with tray


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