Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
+4 More

Bose A20® ANR Aviation Headset - 6 Pin Lemo Plug - Coiled Cord with Bluetooth

Add to Wishlist
Part# 11-13776
MFR Model# 324843-T040



Plug in. Turn on. Go flying.

The A20 Aviation Headset is engineered to be more comfortable and provide more noise reduction than any headset we’ve ever made, while still delivering the clear audio you expect from Bose. And now there are more features than ever, including: a Bluetooth audio and communications interface; customizable audio prioritization control; intuitive “plug-and-play” operation; a high-performance microphone and an optional coil cord. And at just 12 ounces, it’s still one of the lightest active noise cancelling headsets out there. No other headset offers this unique combination of features and benefits.
  • 30% greater active nose reduction than conventional aviation headsets
  • 30% less claming force than conventional aviation headsets
  • Clear audio with active equalization
  • Bluetooth audio and communications interface for connectivity with your communications and navigation devices*
  • Customizable audio prioritization controls lets you mute an audio signal when receiving a communication, or mix the two together
  • Simple, intuitive headset operation - plug it in, turn it on, go flying

Enjoy a peaceful,
comfortable flight

The A20 headset gives you 30% greater noise reduction than conventional aviation headsets, so you’ll enjoy a peaceful flight from short stops to long hauls. And at just 12 ounces, with sheepskin cushions and minimal clamping force, it’s one of the lightest and most comfortable aviation headsets you’ll find. All designed to let you focus on what matters—flying.


Clear audio for music and communication

Bose Active EQ keeps the audio clear and distinct, whether you’re listening to music or an important communication.
Simple, intuitive operation

Plug-and-play convenience means the headset is ready to fly when you are—no need to press a lot of buttons first just to activate it.


Enhance your experience

The ergonomic control module includes an auxiliary audio input with Intercom/AUX priority switching, ideal for dedicated GPS and traffic warning systems. It also features a customizable audio prioritization control with “mute” and “mix” settings, and flexible power circuitry with auto-on that switches to and from battery power and aircraft power. Select models also include Bluetooth connectivity for taking calls or listening to music.


For all types of aircraft

The A20 Aviation Headset is available in dual plug, 6-pin plug and U174 plug models and a variety of configurations designed for use in all types of general aviation aircraft, including helicopters.

* Features available in certain variants of the headset.

More features

  • Coil cord down-cable now available in select configurations
  • Certified to FAA TSO-C139 and EASA ETSO-C139
  • Adjustable powered microphone can be connected to either earcup and set in a range of stable positions for optimal communications
  • Smart shutoff helps provide at least 45 hours of use from just two AA alkaline batteries
  • Five-year transferable limited warranty covers parts, labor and second-day return shipping expenses for non-abuse malfunctions
  • Download the Bose A20 Manual (PDF)
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


  • Significantly improved noise reduction across a wider range of frequencies. Proprietary Bose innovations now use microphones both inside and outside each earcup to sense and reduce more ambient aircraft noise.
  • Redesigned ear cushions deliver greater comfort using new materials. More compact earcups now have a larger interior cavity, allowing more room for the ears; redistribution of headset weight also helps improve overall comfort and stability.
  • Enhanced center torsion spring on magnesium headband provides a consistent, comfortable fit for any size head with significantly less clamping force than most pilot headsets.
  • TriPort® acoustic headset structure, available only from Bose, produces tonally balanced audio from relatively small and lightweight headphones.
  • Active equalization electronically tunes the headphones' frequency response, enabling outstanding audio performance.
  • Adjustable powered microphone can be connected to either earcup and set in a range of stable positions for optimal communications.
  • Auxiliary audio input on redesigned control module for connection to GPS and other devices. Pushbutton Intercom/AUX enables priority switching
  • Bluetooth phone connectivity lets you take calls wirelessly through the headset.
  • Enhanced EMI protection to minimize communications interference.
  • Integrated sidetone for more natural sounding intercom and mobile communications.
  • Smart shutoff for extended battery life. Installed headsets also feature a flexible power system to automatically switch from aircraft power to battery power as needed.
  • Ergonomic control module has been redesigned for greater ease of use. Includes contoured grip and streamlined interface with high-contrast icons on main controls.
  • Custom carrying case helps protect headset during storage and transport.
  • TSO certified by FAA/JAA to meet performance standards for headsets used on civil aircraft. Made in the US, it also meets RTCA/DO-160D and DO-214 environmental requirements.
  • Five-year transferable limited warranty covers parts, labor and second-day return shipping expenses for non-abuse malfunctions.
  • Specs: 8.4" H x 6.3" W x 3.2" D (12 oz)

In The Box

  • A20® Aviation Headset
  • In-line clothing clip
  • Control module
  • 2 AA batteries
  • Aux-in cable adapter
  • Carrying case
  • Accessories
  • Frequently Purchased With
  • Customers Also Viewed
  • Related Items


Have absolutely loved my A20 headset since I bought it 3 years ago. I recently dropped the unit on concrete and fracture cracked two areas of the headset. I contacted Bose, and they paid for shipping and repair . I had my good as new headset back in my hands in 12 days from me calling. Exceptional service, absolutely an amazing service and product.

Chris J
June 18, 2023

John B Verified Purchase


September 21, 2022

Excellent product. Excellent service.

Carey H
January 5, 2021

Best headset and best service on the planet!!!

Swt A
August 3, 2020

I purchased a LEMO plug Bose after purchasing and using a Lightspeed Tango headset for 7 months. Although the Lightspeed offered good ANR performance I had no idea how much better the Bose would be for my airplane with a geared engine. My motivation for purchasing the bose was the Lightspeed is difficult to get the ear cup location just right, it feels bulky. It didnt seem like I could adjust the headset to fit. From a comfort standpoint, the Lightspeed does have a slight edge with the soft ear pads and less clamping force. But I believe the less clamping force reduces the passive noise reduction. The major reason for seeking a different headset is do not like the microphone and side tone of the Lightspeed. Both in transmit and intercom, the lightspeed is not clear and seems to have a delay. Back to the Bose, it is worth every penny and wiring the LEMO jack was straight forward- Im very glad I did it.

James O
September 2, 2019

I fly in a Skyhawk a lot and have used a DC Pro X for the past two years. The Bose headset is a bit more money, but has at least twice as good noise cancelation and better Bluetooth controls. Both headsets work very well though and I highly recommend buying the best headset you can afford.

June 2, 2018

Chris L
May 31, 2018

this headset is second to none very clear super sound and the blue tooth works so good that everyone thinks i am in the office

June 4, 2015

Don’t waste your money. After 5 hours of flying, my ears really hurt from the pressure of the cups. And this is the third time I’ve had to replace the foam filled ear cups, as the elastic cloth holding the foam cup to the headset keeps tearing. Bose may be known for high end audio equipment, but they have much to learn about aviation headsets.

Frank B
August 24, 2020


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 Bose A20 lemo version allow ANR to run on batteries if used in a Dual GA airplane? Can you confirm that the version you sell in fact does have AA batteries, and can be used with a dual GA setup just through a dual GA - lemo adapter (passive)?

Yes, the battery box for the Lemo version of the Bose A20 will accept the included AA batteries. This will allow the batteries to power the ANR if the headset is being used in a Dual GA equipped aircraft with passive adapter part # 11-08741. No additional battery box is required.

Q: Can the Bluetooth feature on the Bose A20 headset stream both music and phone calls or is it for phone calls only?

Yes, the Bluetooth feature will stream both music and phone calls to your headset from your device (ie, iPhone, iPad, Android, etc).

Q: What does the six pin lemo plug mean?

Six pin Lemo is the connection plug style. This type of plug is a single connector, and uses aircraft power to activate the ANR. This differs from the more common dual GA plug style, in which there are two male plugs that go into the aircraft jacks and requires AA batteries to run the ANR.

Q: With an A20 headset, LEMO style connector, will all functions, bluetooth etc.work without batteries in the control module? In other words, are the batteries totally unnecessary? If so, should I just keep it empty or will it default to the batteries if they are present? Any reason to use batteries as long as I am using a LEMO receptacle?

The batteries will only be used in the instance that the LEMO connector stops supplying power. The headset will always use ships power if available, and resort to the batteries as a backup. They can also be used if an adapter, Part # 11-08741, is used to use the LEMO Style headset in a airplane equipped with dual GA female jacks.

Q: Regarding Part# 11-13776: How long is the coiled cord and how springy is it? Would be nice not to have to lay the cord around out of the way...

Unstretched the coiled portion is approx 14-75 inches. It can be stretched over 6 feet.

Q: I have the Bose A20 Headset and my aircraft has the GA plug but also has the ANR power plug. Im wondering if there is some adapter that would allow the headset to be run without batterys. LEMO plug to some adapter perhaps?

You would have to change the cable to our part number 11-08734, for it to run off ships power.

View in Catalog

View Image View in Catalog