Here's an adjective, used to describe materials, that you may not have heard of: "Rate-sensitive." It refers to when a material responds to the speed of a force applied to it. As an example, concrete is not rate-sensitive: If you walk into a concrete barrier or drive into it at 80 miles an hour, it remains the same hardness. In contrast, water is rate-sensitive. You can gently push your hand down through the surface of a lake. But if you slap downwards with all your might, the water turns hard and resists.This magical property has been engineered into a proprietary material by Delta Three Oscar, a British manufacturer of ballistic protection gear. The material, D3O, contains a secret sauce of polymers suspended in a lubricating medium. Wrapped in foam that has been specially engineered for comfort on the human head, D30 is what the company's Halo 3 Ballistic Helmet Liner is made out of. The resultant product exceeds the U.S. Army's AR/PD 10-02 blunt impact requirements by 33%, and its shape is designed to accommodate a variety of communications headsets. At just 80g (2.8 oz), the company bills it as "the world's lightest, most comfortable ballistic helmet liner." It features 12 integrated airflow channels for ventilation, and the material contacting the head is anti-microbial and moisture-wicking. It's also been designed to be easy for soldiers to install these in the field. The head-contacting side features type on it, which both labels the three different parts and allows the soldier to determine the pieces are oriented correctly (i.e. the type should be read so that none of it appears upside-down). These notches help the soldier align the pieces correctly from side-to-side. The helmet-facing side is lined with hook-and-loop fabric that adheres it to the helmet interior. Embossed letters indicate which of the three pieces you're holding. Two corners on the front and rear pieces are recessed so that they don't interfere with the helmet's harness bolts. (Absent this feature, the liner would try to push away from the helmet at these points.) The Halo liners have been integrated into the U.S. Army's new Integrated Head Protection System (IHPS) helmets, which are replacing the two-decades-old Advanced Combat Helmet (ACH) and Enhanced Combat Helmet (ECH) over the next three years.Fun fact: The cost of the Riddell SpeedFlex helmets worn by many players in the NFL, where the average salary is $3.2 million, costs roughly the same as an IHPS helmet worn by a PFC in the 82nd Airborne, average salary $27,119. About $450 a pop.

Sony WH-1000XM64.5 ExcellentBottom LineSony's high-end WH-1000XM6 headphones feature foldable earcups, new driver tuning, and noise cancellation that rivals the best from Bose.US Street Price$449.99Learn MoreSony WH-1000XM6 ReviewVSBose QuietComfort Ultra Headphones4.5 ExcellentBottom LineThe Bose QuietComfort Ultra Headphones pump out robust sound and offer the best noise cancellation of any over-ear models we've tested.Street Price1699.0Learn MoreBose QuietComfort Ultra Headphones Review Table of ContentsPriceDesignComfortCases and CablesBluetooth and ConnectivityBattery LifeMobile AppNoise CancellationTransparency ModeSound QualityMic Quality PriceIf you want the best over-ear noise-cancelling headphones available, be prepared to pay up. None of these models comes cheaply. It's not entirely surprising that Apple has the priciest pair of the bunch at $549—the AirPods Max are also the oldest. The brand-new Sony WH-1000XM6 headphones cost a cool $449. Bose now has the "cheapest" pair of the bunch with its two-year-old QuietComfort Ultra ringing in at $429.99. Winner: Bose QuietComfort UltraDesignAll three headphones have their own look and defining features. Sony's resembles the previous model, with a matte plastic look and a lightweight build. They come in three colors (Black, Midnight Blue, or Silver), and the earcups can fold flat for portability. The Bose QuietComfort Ultra headphones, meanwhile, are mostly plastic, even more compact when folded, and come in four colors (Black, Lunar Blue, Plum, or White Smoke).Left to right: AirPods Max, Sony WH-1000XM6, Bose QuietComfort Ultra(Credit: Christian de Looper)Aesthetically, the AirPods Max stand out thanks to their metal build and clean lines. They have removable earcups and come in the most color options, including Blue, Midnight, Orange, Purple, and Starlight. Their use of metal makes them heavier, but ensures they look the most luxurious. They also have a fantastic rotating digital crown for adjusting the volume and controlling other features.Winner: AirPods MaxComfortBose QuietComfort Ultra(Credit: Christian de Looper)The metal build of the AirPods Max makes them the heaviest of the three (13.6 ounces), but doesn't impact their comfort as much as you might expect. They're good at distributing weight across the top of your head, and their plush earcups don't clamp down too tightly. Nonetheless, both the Sony WH-1000XM6 and Bose QuietComfort Ultra Headphones (8.8 ounces each) are more comfortable. Of the three, the lower clamp force and thicker padding of the Bose headphones make them the most comfortable for extended listening.Winner: Bose QuietComfort UltraCases and CablesWhile the AirPods Max may look the most high-end, the same can't be said of their meme-worthy rubber case, which is more of a barely there cover-up than a case. They only come with a USB-C cable, though you can use it for lossless USB audio. To connect them to a 3.5mm source, you’ll need to buy Apple’s USB-C to 3.5mm adapter separately.Left to right: AirPods Max, Sony WH-1000XM6, Bose QuietComfort Ultra(Credit: Christian de Looper)Both the Bose QuietComfort Ultra and Sony WH-1000XM6 come with a clamshell hard case and the cables you need for both charging and wired listening. They each include a USB-A-to-USB-C charging cable, while the Bose headphones have a 2.5mm-to-3.5mm cable for their smaller input port, and the Sony headphones have a standard 3.5mm cable. Sony's carrying case has a magnetic clasp instead of a zipper, but I prefer the smaller leather case that comes with the Bose QuietComfort Ultra.Winner: Bose QuietComfort UltraBluetooth and ConnectivityAll three headphones support the standard SBC Bluetooth codec, and they all have AAC on top of that. That’s where Bluetooth codecs end on the AirPods Max, though. The Bose QuietComfort Ultra Headphones add support for AptX Adaptive, which works with compatible Snapdragon-powered phones. As has been the case with Sony's high-end headphones for years, the WH-1000XM6 also support LDAC, which works with most modern Android phones, and LC3, which is becoming more common on Android devices.AirPods Max(Credit: Christian de Looper)Both the Bose and Sony headphones have Bluetooth multipoint for connecting to two devices simultaneously. If connecting to multiple Apple devices is your goal, the AirPods Max enjoy a significant ecosystem benefit—they can switch seamlessly between any Apple device (Apple TV, iPad, iPhone, Mac) signed into the same iCloud account. Sony gets the win here for codec support (LDAC works with more phones than AptX Adaptive and LC3 is a nice addition), while Apple gets the win for versatile ecosystem connectivity (as long as you use Apple devices).Winner: Tie (AirPods Max and Sony WH-1000XM6)Battery LifeNone of these headphones stand out when it comes to battery life. The AirPods Max have a rated battery life of 20 hours with noise cancellation on, but you might find that you get less actual listening time if you don't put them in their case every time you take them off (they enter standby mode rather than turn off completely). The Bose QuietComfort Ultra headphones step that up to 24 hours, while the Sony offers 30 hours of listening and the fastest charging. While the Bose QuietComfort Ultra Headphones can get three hours of listening from 15 minutes of charging, the Sony WH-1000XM6 headphones can get three hours of listening from just three minutes of charging. Winner: Sony WH-1000XM6Mobile AppThe mobile experience associated with these three headphones is starkly different. On the surface, the AirPods Max appear to be the most bare-bones. Rather than rely on a separate app, their settings are integrated deeply in your iPhone's operating system. To access them, you have to wade through the Bluetooth settings menu where you can tweak things like noise modes and automatic head detection, but there's no EQ. You can also tweak some settings through Control Center, including spatial audio settings. Recommended by Our EditorsSony WH-1000XM6(Credit: Christian de Looper)The Bose app is minimalist and easy to navigate. The main screen grants you access to noise modes, Bluetooth settings, button shortcuts, and a rudimentary EQ. It lets you tweak what it labels as bass, mid, and treble, but doesn't specify which frequencies each slider affects.Sony's Sound Connect app offers far more control than Bose. You can set up your noise modes, button shortcuts, and location-based noise settings. You also have access to a comprehensive 10-band EQ, with bands ranging from 31Hz to 16kHz. Apple beats the others on depth, but Sony keeps everything in one spot and has the best EQ.Winner: Tie (AirPods Max and Sony WH-1000XM6)Noise CancellationUntil the Sony WH-1000XM6 headphones arrived, Bose was the clear winner when it came to noise cancellation. The QuietComfort Headphones silence most environmental sounds. The AirPods Max offer respectable ANC, but it can't compete with Bose or Sony offerings, both of which excel at dampening ambient noise, whether you're on a plane or in a busy coffee shop.Bose QuietComfort Ultra(Credit: Christian de Looper)Sony has a slight edge when it comes to complicated settings like a city bus or a busy cafe, spaces that have uneven bursts of sound that Bose isn't quick enough to cut. Bose still delivers excellent ANC, but it's no longer head and shoulders above the competition, and Sony takes the win in this category.Winner: Sony WH-1000XM6Transparency ModeAirPods Max(Credit: Christian de Looper)While the AirPods Max trail behind the other two in ANC, they're a clear winner when it comes to transparency mode, which lets you hear your surroundings. They deliver natural and consistent audio and don't introduce the hiss that Bose and Sony do. Winner: AirPods MaxSound QualityAll three of these headphones offer outstanding sound quality. The 40mm drivers in the AirPods Max deliver deep bass and the best high-end response of the three, but the lack of a user-adjustable EQ is frustrating.The Bose headphones also offer excellent bass response with clear highs, but those highs aren't quite as crisp as they are on the AirPods Max. The audio also doesn't really feel as spacious as the AirPods Max, which have a wider soundstage and can sometimes come across as overly processed. Lastly, the Sony WH-1000XM6 headphones have a slightly sculpted sound, removing some of the mids that Bose keeps. If you want to change the sound signature, Sony offers the best EQ to do so.Sony WH-1000XM6(Credit: Christian de Looper)If spatial audio is important to you, then the AirPods Max are the best of the bunch, as long as you use them with Apple devices. The AirPods Max can actually process surround sound input, instead of artificially adding the effect to stereo sources (assuming the content offers it, of course).So while the AirPods Max have the best audio out of the box, the Sony offers much deeper customization, supports higher-quality sources, and works with more devices, making it a tie.Winner: Tie (AirPods Max and Sony WH-1000XM6)Mic QualityThe microphones across all three headphones are perfectly sufficient for voice calls. Bose offers a little more body than Apple or Sony, but not as much clarity and detail. The AirPods Max microphone is crisp and detailed, but of the three, Sony's headphones deliver the best experience thanks to their half-dozen microphones and improved beamforming technology.Winner: Sony WH-1000XM6

Tencent's president Martin Lau said the company can rely on a "pretty strong stockpile of chips that we acquired previously." Ying Tang/NurPhoto via Getty Images 2025-05-15T04:30:03Z Save Saved Read in app This story is available exclusively to Business Insider subscribers. Become an Insider and start reading now. Have an account? Tencent's president Martin Lau says company has a "pretty strong stockpile of chips." Last month, Nvidia said the Trump administration imposed new chip export restrictions to China. Lau said Tencent has enough chips to train its AI models "for a few more generations going forward." The Chinese tech giant Tencent said it has a "pretty strong stockpile of chips" to tide it through America's chip sale restrictions.The company's president, Martin Lau, was speaking to investors during an earnings call on Monday when he was asked how Tencent would deal with US chip restrictions.Lau said "it's a very dynamic situation" that Tencent is managing, and it's trying to "figure out the right solution" to make sure its AI strategy "can still be executed." Lau told investors that Tencent can rely on a "pretty strong stockpile of chips that we acquired previously." Lau said the chips will be deployed to projects that can "generate immediate returns for us," such as in Tencent's advertising business.When it comes to training Tencent's large language models, Lau said the company will not need a large number of chips to improve its performance. This is because companies are starting to move away from the scaling law "which required continuous expansion of the training cluster," Lau said."And now we can see even with a smaller cluster, you can actually achieve very good training results. And there's a lot of potential that we can get on the post-training side which do not necessarily meet very large clusters," Lau said."So that actually helps us to look at our existing inventory of high-end chips and say we should have enough high-end chips to continue our training of models for a few more generations going forward," Lau added.Last month, Nvidia told investors in a regulatory filing that the Trump administration will be imposing new export licensing restrictions for chips being sold to China and other countries.The chip giant said it would incur a charge of up to $5.5 billion in inventory, purchase commitments, and reserves for its H20 chip in the first quarter, which ended on April 27. Nvidia designed the H20 chip based on the Biden administration's chip export restrictions.Analysts, however, have said the Trump administration's new restrictions will not slow down China's progress in AI."Banning the H20 would make no sense as its performance is already well below Chinese alternatives; a ban would simply hand the Chinese AI market completely over to Huawei," Bernstein analysts wrote in a note to investors on April 23.Tencent did not respond to a request for comment from Business Insider. Recommended video