With the launch of its Zulu headset Lightspeed aviation can be said to have suppressed each and every of its competitors. The lightspeed Zulu headset is crafted out of magnesium alloy and hits the scales at 13.9 oz. Its looks are heightened by the superbly crafted leather ear cups that keep out unwanted sounds and thus enhance the clarity of the sound.The headset is given a whole lot of features that enable the user to switch between sound modes as per his or her location to benefit from the best quality sound. The ANR or active noise reduction system incorporated within these speakers makes these headphones worth their price in the market today.The Telex airman 750 is a headphone/headset that doesn’t make use of high end sound control systems to enhance the sound clarity. It is extremely light weight and it hits the scales at 4.0 oz. As it fails to incorporate the ANR or PNR systems it is suitable for cockpits with fewer amounts of noise conditions or in those planes powered by gas turbines. However even though the telex airman 750 headset lacks these much needed enhancement means, users are assured of high quality equipment as these headsets are subjected to stringent quality checks before being sold to prospective customers.