GARMIN GMA 340 AUDIO PANEL - Used Good Condition


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Current Price: 1,000.00 USD

Garmin GMA 340 Audio Panel.  Used, Very Good Condition.  Works Perfectly.  Removed from our Bonanza during upgrade

Ships with original Garmin tray.  No harness or connector (this audio panel uses very common connectors).  No manual (they're available on the Garmin website).  

The following information is from the Garmin website:

The GMA 340 audio panel offers the latest in digital features to reduce cockpit workload and improve communication.

Operate with Ease

GMA 340 features convenient, LED-illuminated button controls for audio selection of both nav and com audio — as well as split comm capability for pilot and co-pilot. Large buttons activate the comm microphone and audios for up to three comm transceivers to simplify cockpit workload. Split comm allows the pilot to transmit/receive on Comm 1 and the co-pilot to transmit/receive on Comm 2.

Enjoy Host of Features

GMA 340 streamlines cockpit management. It provides MASQ processing, which reduces ambient noise from the avionics inputs, and it has special circuitry to de-emphasize cabin noise to enhance communication in the cockpit. You can select speakers to monitor the aircraft radios or make PA announcements. The 340 also provides comm transmit indication and the three-light Marker Beacon receiver/indicator with high or low sensitivity and SmartMute audio muting.

GMA 340 has two unswitched inputs for telephone ringers, altitude alert warnings or other warning tones, so you'll never miss an important incoming transmission. The 340 also includes a six-place VOX intercom with three modes of isolation, dual stereo music inputs and independent pilot, co-pilot and passenger volume control. In fact, each microphone input has a dedicated VOX circuit to ensure that only the active microphone is heard when squelch is broken.

GMA 340 is easy to install in the tightest aircraft spaces. 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.

GMA 340: Technology that has everyone talking.

Physical & Performance

Physical dimensions6.29"W x 1.3"H x 7.72"D (16 x 3.3 x 19.6 cm)
Weight1.7 lb (.8 kg)


Audio Panel Features

Telephone interfacetel 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 modes3 - All, Pilot, Crew
Transceivers3 - COM1, COM2, COM3
Additional receiver inputs4 - NAV1, NAV2, ADF, DME
Music source input2 stereo music source inputs - isolation modes differ from 347
Music input impedance460 Ohms
Music frequency response100Hz - 15kHz
Speaker outputspeaker output for radios or PA function (10W into 4 Ohms or 8 Ohms)
PA functionpilot selectable - dedicated button
Marker beacondual sensitivity
Manual squelch
SmartMute (includes SmartMute marker audio muting)
Intercom volume controls
Manual VOX level controls2 (pilot, co-pilot/passenger)
Avionics squelch (squelch processing for noise reduction)
Failsafe (connects Pilot PTT, mic and headset to COM1 if unit is turned off)


Used, very good condition.  14 day return.  No paperwork provided -  buyer to determine airworthiness.


GARMIN GMA 340 AUDIO PANEL - Used Good Condition GARMIN GMA 340 AUDIO PANEL - Used Good Condition GARMIN GMA 340 AUDIO PANEL - Used Good Condition
GARMIN GMA 340 AUDIO PANEL - Used Good Condition GARMIN GMA 340 AUDIO PANEL - Used Good Condition GARMIN GMA 340 AUDIO PANEL - Used Good Condition


Click here to purchase or contact the seller of this item on eBay