I don't know about you, but I've always wondered who exactly is manufacturing those professional-grade headsets worn by airplane pilots. Quite obviously, we're not talking about a single company here, but about several big names from the audio accessories' industry. And one of the most important ones is Bose, who's just revealed the latest addition to its aviation headsets lineup, namely the A20 model.

In order to achieve a greater level of noise reduction in the cockpit, where noise levels can reach 105 dBA, the A20 Aviation Headset uses a more advanced approach to active noise reduction. So, Bose engineers developed new, sophisticated electronics and a new, proprietary driver specifically for the A20 headset. The electronics combine with microphones placed both inside and outside the earcup to more effectively sense, measure and react to cockpit noise -- instant by instant -- creating a more precise noise cancellation signal. The driver, designed for higher output levels, reproduces this signal, enabling the A20 headset to deliver its improved noise reduction in louder environments.

For better passive noise reduction, the A20 Aviation Headset features new proprietary ear cushion technology and a new earcup design to block more noise from entering the earcup -- while allowing more room for the ears. Comfort is further improved through precise distribution of weight throughout the A20 headset, allowing for 1/3 less clamping force than most conventional noise canceling headsets.

As mentioned earlier, the Bose A20 Aviation Headset includes a new Bluetooth communications interface (Bluetooth 2.1 hands-free profile) with a new portable control module. Using integrated sidetone technology, pilots can hear their own voice clearly when the headset is disconnected from the aircraft, and communication is done via a Bluetooth mobile phone.

An auxiliary audio input allows users to connect the headset, via a 3.5mm adapter, to an external audio source, such as a portable GPS or a traffic warning system. Pilots can also choose between two distinct listening settings for more control over what they hear. In the mixed audio setting, the aircraft’s intercommunication system (ICS) signal can be heard along with the auxiliary input signal. With the prioritized audio setting, the auxiliary signal is muted when the ICS signal is present. In either setting, the aircraft’s ICS signal and a Bluetooth call can be heard together.

Standard connection options are available with the A20 headset, including Dual General Aviation (G/A) plug and 6-pin Installed. With the G/A plug, the headset is connected to an aircraft’s ICS and powered by two alkaline AA batteries for a minimum of 45 hours of operation. The 6-pin installed version can be powered directly from the aircraft or with two included AA batteries. When combined with an optional adapter cable, it provides pilots with a new level of flexibility; they can choose aircraft power or the mobility of battery power. Bose advanced electronics switch seamlessly from aircraft power to battery power and back, without sacrificing performance.

Since we're talking about a professional product here, it should come as no surprise that the A20 Aviation Headset is available as we speak for $1,095. However, pilots who don't really require the Bluetooth mobile phone connectivity feature will be able to get it for “just” $995.  


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