Bose A20 Headphones Serial Number Location and Warranty Information
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SERVICE AND WARRANTY INFORMATION

Locating the headset serial number

Your Bose® A20® Aviation Headset is identified by a unique headset serial number located on the underside of the headband and underneath the headband cushion. Reference this serial number when you register your product or contact Bose for technical support.

Serial number

Headband cushion

Be sure to properly reseat the headband cushion by pressing down firmly. For more information on replacing the headband cushion, see Refer to “Headband cushion replacement” on page 26.

Warranty

Details of the limited warranty are provided on the warranty/product registration card included in the product carton.

Limited warranty service

To return your headset to Bose for repair

Return your headset using the following procedures:

1.Contact the Bose organization in your country/region (visit Global.Bose.com for Bose contact information in your country/region) for specific return and shipping instructions;

2.Label and ship the product, freight prepaid, to the address provided by the Bose organization in your country; and

3.Place any necessary return authorization number prominently on the outside of the carton. Cartons not bearing a return authorization number, where required, will be refused.

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Contents A20 Aviation Headset Important Safety Instructions Safety InformationContents Troubleshooting Operational advisory Hearing safety Volume controlUsing audio sources Recognizing aircraft soundsHeadset earcup requirements Earcup inner screenWhat’s included IntroductionHeadset assembly What’s in the cartonBluetooth control module Conventional control module Control module variationsPower and cable variations Battery powered options Dual powered optionsMicrophone assembly Attaching the microphone assemblyBattery compartment Opening the battery compartmentOperation switches To change the operation switchesAuto Off functionality Inserting and replacing the batteriesTo insert or replace the batteries Connecting the headset to the aircraft Using the 6-pin plugTo connect the headset To disconnect the headsetUsing the dual general aviation plugs Using other plug typesMicrophone placement Wearing and adjusting the headsetConditions related to fit Clothing clips Using the control module Power buttonPower indicator Indicator color Power source Type of light IndicatesAuxiliary AUX audio input Audio priorityMultifunction/Audio priority switch Multifunction/audio priority switch has three positionsUsing the headset With a Bluetooth-enabled phone Pairing the headset with your phoneBluetooth indicator light status Reconnecting to a previously connected phoneRecovering a lost connection Disconnecting a Bluetooth technology-enabled phoneBluetooth volume control To clear pairing device history from the headsetMaking and answering calls Cleaning the headset General cleaningInstructions for airworthiness Headset earcup openingsReplacing parts Microphone windscreen replacementMicrophone windscreen Headband cushionBattery replacement Ear cushion replacementReplacing the ear cushions Microphone assembly or access cover replacement Headband cushion replacementStorage Noise Reduction Case of difficultyCommunications Audio Auxiliary audio input Bluetooth wireless technology Auto offMounting the aircraft panel connector Mono connection diagram Stereo connection diagramHelicopter U174 connection diagram Details on making the connectionsTechnical Information FAA Technical Standards Order Condition CategoryWarranty Limited warranty serviceLocating the headset serial number To return your headset to Bose for repairOrdering parts and accessories Contact informationService and Warranty Information

A20 specifications

The Bose A20 Aviation Headset is a remarkable piece of technology designed specifically for aviators and aviation enthusiasts. Since its release, it has garnered a reputation for delivering superior sound quality, comfort, and durability. Manufactured by the well-known audio company Bose, this headset integrates cutting-edge features that enhance the flying experience for pilots and passengers alike.

At its core, the Bose A20 boasts advanced noise cancellation technology. It employs an active noise reduction system that effectively eliminates unwanted ambient noise, allowing users to concentrate on their surroundings and communication without distractions. This feature is especially crucial in the noisy environment of an aircraft cockpit, where engine noise levels can be overwhelming. The A20 significantly reduces this noise, enhancing clarity during radio transmissions.

The headset also offers excellent audio performance. With clear and balanced sound reproduction, the A20 ensures that every communication and audio alert is heard without distortion. This is complemented by integrated Bluetooth technology, which enables wireless connectivity to mobile devices. Pilots can easily stream music or receive phone calls while keeping their hands free, further enhancing the headset's functionality.

Comfort is another hallmark of the Bose A20. The headset is designed for long-duration wear, featuring plush ear cushions and a lightweight construction. The adjustable headband allows for a customized fit, minimizing fatigue even during extended flights. Additionally, the A20 is built to withstand the rigors of aviation use, with rugged materials that ensure longevity.

Another standout characteristic is the intuitive controls and design. The headset is user-friendly, with simple buttons that allow pilots to adjust noise cancellation levels and manage Bluetooth connections effortlessly. Furthermore, the inclusion of a detachable audio cable adds versatility, making it compatible with various aircraft and devices.

In conclusion, the Bose A20 Aviation Headset is a top choice for pilots seeking an exceptional combination of sound quality, advanced noise reduction, comfort, and user-friendly features. Its innovative technology and thoughtful design make it a vital tool for anyone serious about aviation, ensuring a more enjoyable and productive flying experience. Whether in a small general aviation aircraft or a larger commercial cockpit, the A20 stands out as a leader in the aviation headset market.
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