THIS IS A VIDEO COMPARING THE ORIGINAL ZULU TO THE BOSE X How does the Lightspeed Zulu compare to the Bose Aviation Headset X and David Clark X11? All three are great headsets. The Bose Aviation Headset X and the Lightspeed Zulu are comparable in both comfort and noise reduction. The weight of the Lightspeed Zulu is about 1.5 ounces heavier than Bose. Even with the extra weight, the Lightspeed Zulu is still very comfortable. I put a lot of emphasis on comfort. The comfort of the headset depends on the individual. Trying on headsets is like trying on shoes. One that is comfortable for me may not be comfortable for you. Nobody can give a review and tell you that you will find the headset comfortable, it is too subjective. I find both the Bose Aviation Headset X and the Lightspeed Zulu very comfortable. Which one is more comfortable for you? Well, I can't answer that. Only you can. Order the headset. If you are not happy with it, I have a 30 day return policy. When compared to the David Clark X11 the David Clark is generally considered a little more comfortable. I am being very critical when saying that because they are both very comfortable. The ANR on the Lightspeed Zulu does seem to out perform the X11 by a small margin. So the question comes down to whether you want a Very Comfortable Headset with good ANR(X11) or a Very Comfortable Headset with Great ANR (Lightspeed Zulu). This is of course just my opinion... Order the headset. If you are not happy with it, I have a 30 day return policy. Thanks David Rochin Airport Pilot Shop   Now for the standard marketing information: A distinctive new look and continuous innovation make the Zulu.2 the ultimate blend of design, technology and high performance. Zulu once again sets the standard by which all premium ANR headsets are measured. Lightspeed engineers researched how pilots perceive noise at various frequencies in the cockpit, then developed technology providing focused noise attenuation over the most critical ranges. The result is a headset with the ultimate performance profile and industry-leading total noise cancellation attributes. Quiet With patent-pending Microport VentSM technology and new electronic cancellation components, the Zulu.2 offers improved active noise reduction (ANR) consistency and performance over a deep, broad range of low frequency noise. The magnesium ear cup is superior at blocking out high frequency noise. Comfort Weighing in at about 13 ounces, the LightcomfortSM design includes plush ear seals, exceptional fit and 15% less side pressure. Clarity With the patent-pending Dual Aperture DiscSM Microphone and re-designed speakers, the Zulu.2 delivers unparalleled voice clarity with crisp, rich audio. Studio quality audio is delivered using an integrated Front Row CenterSM (FRC) and stereo cross-feed technology. In addition, the new microphone design provides greater noise rejection for clearer, more intelligible communications. Durability A low-profile, stainless steel headband provides lightweight durability and excellent cabin clearance. Bluetooth™ Connectivity The Zulu.2's full-function Bluetooth connectivity provides enhanced sound quality for voice, music or compatible audio devices. Cell Phone/Music Connection An integrated control box auxiliary input offers an additional option for connecting a cell phone, music player or other audio device. Stereo or Mono Match audio panel inputs with a quick switch to stereo or mono. ComPrioritySM Never miss important radio communications with patented ComPriority which lowers the volume of any auxiliary device automatically during radio or intercom transmissions. Auto ShutoffSM Lightspeed's proprietary Auto Shutoff feature saves battery life by automatically shutting down the headset power when not in use. Options Battery or power panel models Straight or upper coil cord Dual GA, LEMO or U-174 connectors Low impedance microphone available Accessories Carrying case, cell phone/music patch cords, cord clip, 2 AA batteries, foam windscreen Lightspeed Zulu Headset Factsheet Lightspeed Zulu Headset name: Taken from “Zulu time,” the pilot term for Greenwich Mean Time. Noise reduction: The best combination of Active and Passive in the market is found in the Lightspeed Zulu Materials: Made from metal and composite plastics. The Lightspeed Zulu's Magnesium Ear cups are half the thickness of typical plastic cups yet provide a better rigid barrier for attenuation. Ear cups have heat sensitive foam covered in soft leather. Headband: The Lightspeed Zulu has Removable, vented headpad for comfortable weight distribution. Thin, flexible, formable spring steel band design produces 40% lower side pressure on ear cups than on the 3G series. Calibrated magnesium sliders adjust ergonomically to accommodate larger heads with uniform pressure. Weight: 13.9 ounces. Batteries: The Lightspeed Zulu Requires 2 A batteries. Estimated to last 40 hrs. Storage: Headset folds up when not in use. Bluetooth compatible: the Lightspeed Zulu has a Wireless phone and music interface with controls is embedded into the battery box. Comm. Priority Mute: The Lightspeed Zulu has Circuitry gives priority to incoming radio calls, automatically muting the aux music source. Audio System: The Lightspeed Zulu has Full wireless stereo interface with patented Front Row Center (FRC) audio circuitry. One wireless audio input and one wired. The Lightspeed Zulu FRC solves the problem of left/right channel isolation on stereo headphones. The processor closely matches the shadowing affect of the head for the crossfeed signal to the left (or right) ear. The signal is both amplitude and delay corrected to compensate for the increased distance the sound would travel. The results are extremely pleasing and akin to switching from mono to stereo