Bose qc20 vs airpods pro


Bose QuietComfort 20 is ranked 7th while Shure SE215 is ranked 18th. AirPods ProとBose QuietComfort Earbudsの違いを一緒に見ていきましょう!. So this case is a lot less noticeable when it in your pocket, AirPods have alway been the gold standard when it comes to cases. Here is a list of those competitors: Sony WF-1000XM4. Apple AirPods Pro (2nd Gen) Bose SoundSport Wireless. While the Bose SoundSport Free was designed with the active user in mind, the AirPods Pro have also been a popular choice among fitness enthusiasts. Bose QC30 quick comparison and others. Total playtime on the AirPods 3 when factoring in the charging case is 30 hours (6 hours per charge), while the AirPods Pro is rated at 24 hours (4. Jul 2, 2021 · The Beats Studio Buds are available to buy now for $149. However, the Apple are better Dec 27, 2023 · 今日は、2023年のワイヤレスイヤホン市場における二大巨頭、Appleの AirPods Pro 第2世代 とBoseの Bose QuietComfort Ultra Earbuds に焦点を当てたいと思います。. 00 $299. 99. There’s a difference in features, as we’ll explain below, but there Nov 27, 2023 · The Apple AirPods Pro (2nd generation) Truly Wireless are better in-ears than the Beats Fit Pro True Wireless. The Apple are in-ears, are better built, have higher total battery life, and have active noise cancelling, which blocks out a great amount of ambient noise around you. The AirPods Pro use the slightly older Jul 26, 2023 · The AirPods Pro 2 were launched on September 23, 2022, making them around seven months older than the Beats Studio Buds+. 18 for the Bose case), though you will need to charge Apple's earbuds more often because they won't last as long. In our standardized battery testing, playing a consistent output peaking at 75dB (SPL), we found that the AirPods Max lasts about 21 hours with ANC on. Weighing just 0. Bose QuietComfort Ultra Earbuds. Sound quality wise I'd pick the airpods pro (although I have heard mixed review on the airpod pro 2s, but I thought the original was rather solid). Spatial mode is also pretty neat for having surround sound track your device positioning. EDIT: so I went with the Bose despite your votes because I tried them both out for a day and the Bose were a lot better on the ANC and sound quality front. 1 Oct 15, 2022 · The AirPods Pro 2 dangle down, while Bose designed its QuietComfort Earbuds 2 to stick out forward. 防水ではない。. Bose QuietComfort Earbuds is the one you want, assuming 6 hours + 12 hours in case is good enough Bose QuietComfort 20 is ranked 7th while Apple Airpods is ranked 73rd. ANC on the earpods Pro go 70% of the way compared to qc20/30. That's more than the Ultra Earbuds, which offer 24 hours and four respectively (though the buds last six hours with Immersive Audio disabled). Still, the Nov 18, 2019 · The Conversation (0) We take the new Apple AirPods Pro, and our trusty Bose QC35 noise cancelling headphones, on an 11-hour flight from London to Los Angeles to see which holds the longest charge, which pair is more comfortable, which brand works better with inflight entertainment, and how their active noise cancelling features compare. $303. Both the Apple AirPods Pro (2nd generation) and the AirPods Pro (1st generation) feature an IPX4 rating for the earbuds, which means they’re protected from splashes of water and sweat. Proceeding with the Bose 700, it is a very comfortable pair of headphones. Comfort: the AirPods Pro 2 are more comfortable and give me no ear pain while the QC2 earbuds are not bad but they can give me ear pain after a few hours of use. 耐水である. If we simply counted up the number of wins for each, Sony would easily come Mar 22, 2021 · On the surface, both the AirPods and AirPods Pro look extremely similar. BUY NOW. 99 $353. 8ft and 5ft respectively. They’re white earbuds with a long “stem” that protrudes downward. Nov 14, 2020 · Bose wins out on listening time, with the QC Earbuds rated for 6 hours on a single charge compared to 4. We test battery life by subjecting each headset to a constant output, peaking at 75dB (SPL) until their respective batteries The Apple AirPods Pro Truly Wireless are more versatile headphones than the Shokz OpenRun Pro Bone Conduction. For example, with Quick Charge 3. Apr 26, 2018 · The Bose QuietComfort 20/QC20 are better overall wired headphones than the Razer Hammerhead USB-C ANC. Otherwise, the Pro 2 are packed with features, including Conversation Awareness, the same IPX4 Oct 22, 2020 · Have both AirPods Pro and Bose QC20i -- the AirPods Pro ANC is noticeably worse than the QC20i. However, in the event you can’t find QC35 II, the QC45s are a better option than the Max’s purely cause of the price. 5 hours, 24 hours (with charging case) Oct 28, 2020 · The noise cancellation offered by the AirPods Pro is good, but it’s easily surpassed by the Bose QuietComfort Earbuds – it’s even better than the tech in the best true wireless earbuds of In addition the base on the qc20 is much more punchy than in the airpods. Jul 12, 2022 · Comfort & Fit: Bose NC 700 Vs AirPods Pro. Oct 18, 2020 · Header Cell - Column 0 AirPods Pro Bose QuietComfort Earbuds; Price: $249. It sounds much more natural with less effort in talking and listening to people speak than Supports fast charging. While I feel like the airpods have too little base being almost too bright the qc20s are overpowered by base. 64 inches Sep 22, 2022 · If you're shopping for a pair of true wireless noise-cancelling earphones, you're likely considering the $250 Apple AirPods Pro (2nd Generation), the $300 Bose QuietComfort Earbuds II, and the 4. Apple AirPods Pro (gen 2) : A safe choice, and a smooth experience all round. A headset is one headphone or pair with a built-in microphone. masterduelistky. The feature-rich Apple iOS, battery life, and overall efficiency make the AirPods preferable for some users. 15 ounces for the second-gen AirPods Pro—I can wear Bose’s latest buds comfortably for a full four hours. Nov 24, 2019 · First let’s start with the Bose QC20. Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. The biggest difference between the AirPods Pro (1st gen) and Bose QC Earbuds controls are that Bose lets you adjust the volume from the earbuds. QuietComfort 20 Acoustic Noise Cancellin headphones (以下QC20) QuietControl 30 wireless headphones (以下QC30 Oct 12, 2022 · For ANC, I definitely agree, Bose QC Earbuds II is noticably better than Apple AirPods Pro 2 which I think is the consensus with almost every review I've seen, except macrumors. I've tried them on a few flights and on a few different airplanes (787, A320, 777) and they simply cancel more noise. 今回のAirPods Proはノイズキャンセル機能が一つの目玉となることから、BOSE製品もノイズキャンセル機能がある、以下の3つと比較したいと思います。. You can easily adjust the extenders. Where as with the Bose QC Ultra…. Bose Sport Earbuds. Hello all, For the past year my headset rotation has been: AirPods 1 for day to day and calls. The Apple headphones are more comfortable and have features like an H1 chip for seamless pairing with your Apple devices and Spatial Audio on supported iOS devices. Especially useful in noisy environments. The stems act as antennas that make it easier for Music Sound Quality: Bose = 5/5 (if you like bass + manual EQ adjustability) Samsung/Sony = 5/5 (if you like neutral + manual EQ adjustability) Apple = 5/5 (if you like Spatial Audio) Call Quality: Check out my detailed comprehensive review for details: AirPods Pro 2 vs QC EarBuds II vs LinkBuds S vs Buds2 Pro | Call Quality Comparison Review En este artículo, realizaremos una exhaustiva comparativa entre dos de mis audífonos favoritos: los Bose Quietcomfort 2 y los Airpods Pro 2ª Generación. •. どちらもイヤホンとしては、最高レベルの音質、ノイキャン Dec 18, 2023 · The Apple AirPods Pro (2nd generation) modestly improve upon the first-generation AirPods Pro and feature the same iconic look. Jan 11, 2020 · To be fair, the AirPods Pro do sound 100 times better than the first two iterations, and that's because of the silicone ear tips that provide a better, more secure fit and help seal in sound. They're not like the Bose QCE1, or the Sony WF-XM3, they feel closer to AirPods Pro than those old, bulky models. Nov 25, 2023 · Los Bose QuietComfort Ultra son unos de los últimos auriculares Bluetooth sin cables de gama alta en llegar al mercado y que destacan por su calidad de sonido y cancelación activa de ruido. Oct 21, 2020 · The AirPods Pro case gets a full six hours more battery life (24 vs. the Bose were also a lot more comfortable and stayed in a lot better than the AirPods. . • 1 yr. Bose QC30 for air travel and noisy environments when listening to music or video - but never calls. The most important reason people chose Bose QuietComfort 20 is: These headphones are ideal for long flights. $249. Where the airpods dial base back quite a bit. Its unique sliding mechanism offers maximum stability with seamless adjustment. The Apple are more comfortable, are better built, and have a significantly better noise isolation performance. The Bose QuietComfort Earbuds Truly Wireless and the Anker Soundcore Liberty 3 Pro Truly Wireless have different strengths, and you may prefer either. The Bose have a comfortable fit, a more neutral sound profile, and use a 1/8" TRRS cable, which some users may prefer. Bose QuietComfort Ultra Headphones: 2 wins, 2 ties. 2024 New Replacement Silicone Tips for In Ear Earphones Earbuds Earhook For BOSE Sound Sport Wireless QC20 QC30 Noise has a mute function. Personalized Spatial Audio with dynamic head tracking works with all your devices to immerse you deeper in all-around-you sound when you’re listening to music, watching a movie, or gaming. Right now, I use QC20 and Airpods Pro as my travel audio accessories, but looking to replace the airpod pros (just annoying to use with Android) with either these QC earbuds or the Jabra 85T, but really want to read the reviews of the 85T, particularly the ANC, before I Nov 5, 2019 · I took a pair of the Bose 700 ($400) noise-canceling headphones and the AirPods Pro ($250) on a cross country flight (a 787 Dreamliner, for fellow aviation geeks) for a comparison test. Airpods Pro have a pretty great transparency mode that sounds very natural. 22 inches by 0. However, the Bose are slightly better balanced, their Sep 26, 2020 · The Bose SoundSport Free and Apple AirPods Pro truly wireless headphones are equipped with different features and offered at slightly different price points. The Bose are more comfortable, have a better noise isolation performance, and have a significantly longer continuous battery life. Apple AirPods Pro. 4 And Adaptive EQ accounts for the fit of AirPods Pro, so you hear every frequency May 8, 2024 · The Apple AirPods Pro (2nd generation) modestly improve upon the first-generation AirPods Pro and feature the same iconic look. The Airpods Pro also have noise cancellation control, which consultants say has “pretty close” quality to Bose. Easy to carry, easy to use, good for calls. Nov 8, 2021 · AirPods 3 vs. Noise cancellation: No doubt. This is a pretty stark result for the same conditions, so if you care about not losing time to charging your headphones, the Beats Studio Pro are the clear winner here. Mar 29, 2024 · The $249 AirPods Pro 2 sells for the same price as its predecessor, while the $299 QuietComfort Earbuds 2 is marked up $20 from the original model. The QC45, which have been going on sale for $180-$200, outperform them in every way. It’s unclear whether the AirPods Pro uses this same technology, but it is capable Compare features for AirPods Pro (2nd generation), AirPods (3rd generation), AirPods (2nd generation), and AirPods Max. Travel the Bose win out, hands down. 00: $279. AirPods Pro: Battery life. Bose SoundSport Free: Price and value. 94 inches, while the Bose is Nov 10, 2023 · For all of the similarities listed above, especially if you’re on Android, the $429 Bose QuietComfort Ultra Headphones are much more compelling than Apple’s $549 AirPods Max. 95: Colors: White: Triple Black, Soapstone: Battery life (rated) 4. Nov 10, 2023 · For all of the similarities listed above, especially if you’re on Android, the $429 Bose QuietComfort Ultra Headphones are much more compelling than Apple’s $549 AirPods Max. May 10, 2021 · The Bose buds are larger and heavier than the AirPods (8. Jan 2, 2023 · Apple claims the AirPods Max should last you 20 hours with active noise canceling enabled. 2 connectivity, and support for LDAC, SBC, and AAC codecs. 3 ounces for the original QC Earbuds and 0. They also have a slightly better battery performance. 99 / £129. As for the range of the wireless headphones, the most noticeable difference are with the Solo2 and the BeatsX. With the QuietComfort 35 II, Bose also claims a battery life of 20 hours of playtime. On size, the AirPods Pro 2 measure 1. They use an outdated charging format, lack features compared to the AirPods Pro 2, aren’t very portable, and their ANC is lacking. 5 to 5 Jakość dźwięku. Características AirPods Pro 2 y Bose QuietComfort Ultra 4. Either model makes for a worthwhile investment, so there is no clear winner. The Boses ANC is a bit better too but honestly even the Airpods Pro II are great. The Bose model dials up the lows and low-mids, favoring a richer sound signature, while the AirPods Pro still deliver solid bass depth, but also bring a brighter, clearer sound. They still sound good compared to the QC45s, and the ANC is still effective. ma aktywną redukcję szumów (ANC) Apple AirPods Pro (2nd Gen) Bose QuietComfort Earbuds II. vs. In comparison to Bose’s small control panel, the Pros lets you control the noise cancellation with a simple hold on the stem of either pod – making for quick and convenient control. Neither come cheap. I'm using both right now and while the Bose QC Buds II sound better and more fuller than the AirPods Pro, even the Airpods Pro II sound so much better to me than the original, which I already thought were decent until I tried the 2nd gen. They also have an H1 chip for seamless pairing with your other Apple devices. Tennis pro Ben Shelton sports Ultra Open Earbuds. However, the Anker are more comfortable Sep 23, 2022 · Sep 23, 2022. I literally had to check to make sure the ANC was even turned on because, compared to the QC IIs, it honestly didn't seem like they even had noise cancelation. The Bose win for noise cancelling and battery life and are better on airplanes but after about 1-2 years I did experience some issues with the power switch and connectivity. The airpods are far more convenient and i would imagine the pro model with noise cancelling close the gap with the Bose Oct 24, 2023 · Alternatives To Bose QuietComfort 20 Noise Cancelling Earbud. We reached these results after subjecting each headset to a constant music output peaking at 75dB (SPL) until the batteries fully depleted. Apple AirPods Max: 0 wins, 2 ties. These microphones are designed to filter out background noise from the desired sound. can be used as a headset. I'd honestly get the original airpod pros if I were you since it would probably fulfil your needs while being significantly cheaper. However, features alone make Nov 9, 2023 · The AirPods Pro 2 battery life is 30 hours including the charging case, with the buds lasting six hours. Feb 28, 2024 · Bose has shaved a lot of weight from the design here, though they're still bigger than AirPods Pro 2. They also support multi-device pairing so that you can connect them to your laptop and smartphone simultaneously. 0, the battery can be charged to 50% in just 30 minutes. If you have AirPods 3, I think you should buy QC45. 95 is a lot of money but it feels like quite a bargain, the AirPods Pro 2 would’ve been £229, but the If you care about comfortability the QC45s is hard to beat. ago. Reply. 5 for the AirPods Pro. On a head-to-head basis, there is absolutely no comparison between the ANC in the AirPods Pro 2 and the QC IIs. Mar 7, 2024 · Apple kept the AirPods Pro 2 USB-C version at $249 / AU$399, which is the same price the original AirPods Pro launched at in 2019. The latter may be Mar 14, 2023 · Beats’ sound profile is better suited for music listening. Maybe, if hard pressed, I’d say the AirPods Pro are more versatile, considering their size, the ANC, Transparency and sound quality. Nov 3, 2023 · The Bose QuietComfort Earbuds 2 sport a unique bud shape. 86 inches by 0. Bose Ultra Open Earbuds. When pitted against each other, the AirPods ($159 with standard charging case, $199 with wireless charging case)) and the SoundSport Free ($199 Oct 19, 2023 · Sony WH-1000XM5: 5 wins, 0 ties. After Dec 1, 2023 · Header Cell - Column 0 Apple AirPods Max Bose QuietComfort Ultra Headphones; Price: $549 / £499 / AU$899: $429 / £449 / AU$649: Size: 7. We would like to show you a description here but the site won’t allow us. Bose QuietComfort Earbuds. There are terrible for calls. 2. (Image credit: Simon Lucas / Future) The Bose QuietComfort Earbuds II were released on Sound quality is also better in the QCII, hands down, yet the AirPods Pro sound reeeeeally good too. But even with that improvement, it doesn't quite match up to the quality you get from Bose, or even other high end brands like Sennheiser, Sony, and more. AirPods Pro is an interesting comparison to make. The head is angled like the AirPods Pro 2, but the Bose QuietComfort buds have a much shorter stem where touch controls are located Personalized listening Sound. Headphones - IEM/Earbud. They also have a longer continuous battery life and more charges in their carrying case. I had managed to test a pair for a day as well as the AirPods Pro 2, and despite having an iPhone, the Bose QC were just definitely the better option. has a noise-canceling microphone. Apple AirPods Pro(第2世代)完全ガイド:特徴、評価、そして購入理由. Their ANC feature is significantly better as they have an in-line battery to help power them. Bose Sport Earbuds vs. kinda sucks it doesn't have multipoint pairing, though I do see issues with multipoint on my QC35II (lots of lag). With all that said, there is a white noise hiss that is Nov 29, 2023 · The Bose Noise Canceling Headphones 700 are a great pair of headphones. Let’s talk about them in detail. In addition to having overall impressive noise-cancelling (-33dB across all frequencies on some tests), these headphones excel when you need to cancel out low After so much searching, research and testing, I finally decided on the Bose QC II. In many ways, they are excellent true wireless earbuds Nov 1, 2023 · Bose QuietComfort Ultra Earbuds will officially set you back $299 / £299 / AU$449 and became available in mid-October, having launched on September 14, 2023. Apple’s $249 AirPods Pro (2nd Generation) and Bose’s $299 QuietComfort Earbuds II now sit atop the mountain of noise-cancelling true wireless earbuds, displacing the originals Oct 31, 2019 · 比較するBOSE製品. Tuned to you. These tiny, portable, noise-canceling earbuds pack impressive ANC capabilities and great sound quality when making calls. Bose for music, airpods for podcasts and phone calls. To change the volume on the AirPods, you need to say “Hey Siri,” when paired with an iPhone or reach for your phone. 5g each vs 5. 4g) and come with a chunkier charging case that's almost twice the size of Apple's. With the QC The Bose QuietComfort 45/QC45 Wireless are somewhat more versatile headphones than the Apple AirPods Pro Truly Wireless. Anker Soundcore Liberty Air 2 Pro. Mobile app Information & communications technology Consumer electronics Technology forward back r/airpods A subreddit dedicated to Apple's AirPods, AirPods Pro and Max, and other future wireless headphones. In addition to having overall impressive noise-cancelling (-33dB across all frequencies on some tests), these headphones excel when you need to cancel out low We would like to show you a description here but the site won’t allow us. AirPods Pro vs. The earcups are nicely padded and breathable enough to allow the air in and out to resist moisture buildup. Jul 24, 2023 · AirPods Pro vs. More microphones result in better sound quality and enable the device to filter out background noise. Mar 28, 2024 · In our tests, the Beats Studio Pro lasted 31 hours and 25 minutes, whereas the Apple AirPods Max was only able to give us a hair under 21 hours in playback time. All of that wrapped in a too expensive package and they aren’t worth it now. Sep 21, 2023 · If you're looking for the best pair of noise-cancelling true wireless earphones, your short list should include the $249 Apple AirPods Pro, the $299 Bose QuietComfort Ultra Earbuds, and the $299. 99 / AU$199. It's insane. The AirPods imo sound better but they’re really heavy on your head. The Apple AirPods Max lasts 20 hours on a single charge with ANC enabled, while the Bose Noise Canceling Headphones 700 last 21 hours and 25 minutes. 95, which is far cheaper than the Apple AirPods Pro. Sony WF-1000XM5: Adaptive Noise Cancellation. The cable length is the same for the fakes and the originals. AirPods Pro take the listening experience to a new level of individuality. Beats Fit Pro. Los ponemos frente a frente para conocer sus características, diferencias y precios. D00M98. The device has an option to mute/unmute a conversation directly from the device. If you own an iPhone, the AirPods Pro 2 are an obvious choice. The Bose case has a mechanical catch rather than a magnetic fastening, meaning it's a bit more secure and won't spill the buds when dropped. Apple AirPods Pro (2nd Gen) Bose Sport Earbuds. 1. Mar 18, 2022 · Summary. If you're shopping for a pair of true wireless noise-cancelling earphones, you're likely considering the $250 Apple AirPods Pro (2nd Generation), the $300 Bose QuietComfort Earbuds II, and the Aug 10, 2023 · The Powerbeats Pro lasts just over 10 hours on a single charge, while the AirPods Pro lasts just over 5 hours on a single charge. Jan 26, 2024 · AirPods ProとBose QuietComfort Earbudsの比較ポイントは以下の6つです。. Sennheiser Momentum True Wireless 2. The Bose are better. The Bose QuietComfort Earbuds Truly Wireless and the Apple AirPods Pro Truly Wireless have different strengths, and you may prefer one over the other depending on your usage. For me the qc30s are perfectly in between. Get them if you want a rock-solid, exceptionally polished experience, and if "good enough" ANC and sound is good enough for you. Ambos comparten la característica de ser completamente inalámbricos, ofrecen una calidad de sonido excepcional y cuentan con funciones de cancelación de ruido. I didn't encounter any reason to not believe that in my testing ProfessionalDesk7296. Bose headphones + Airpods Pro would be a great pairing. Dec 10, 2020 · It took Bose quite a while to get them into stores, but the new $279 (£250, AU$400) noise-canceling QuietComfort Earbuds are finally here. 結論. AirPods Pro: Call Quality (Image credit: Regan Coule/Future) Two years in and only one model has produced better call quality than the AirPods Pro: the Bose Mar 2, 2020 · AirPods vs. While the APPs performed much better than the airpods the QC-30s, excelled in comfort and NC. 4. The Fit Pro’s headtracking technology May 9, 2022 · Sennheiser Momentum True Wireless 3 vs. The latter may be The AirPods are the better all around device IMO. Apple's upgraded H2 chip begets better noise canceling and battery life, while the case's U1 chip and integrated speaker let you precisely locate the case. $299. The AirPods Pro launched in 2019 with a price of $249 / £249 Aug 21, 2023 · The earbuds are pretty hard to differentiate. Jun 6, 2023 · The QuietComfort Earbuds also have touch controls and Transparency mode. Its thinner and more importantly, it has a smaller foot print. Jul 3, 2021 · Sony WF-1000XM4 vs Apple AirPods Pro: connectivity The Sony WF-1000XM4 come with Bluetooth 5. However, you may prefer the Shokz if AirPods Pro (2nd Gen) vs Bose QuietComfort II. All three models use some form of adaptive ANC to tackle the noise in your current environment. Both are great, and each has their specific place and situation to shine. 00. 5 hours of use on a 15-minutes charge. Jabra Elite 7 Pro. Surprisingly though, the AirPods Por 2 USB-C got a price drop in Feb 4, 2022 · The Bose 700 have better noise-cancellation capabilities, but the AirPods Pro offer more value for your money You will simply get your money’s worth with the Apple AirPods Pro . 最新のApple AirPods Pro(第2世代)の全て Thanks. One thing I find that Apple AirPods Pro 2 is better at is transparency mode. Activity the Beats pro and for hanging in the yard, at the desk or just casual listening; either the APP or Powerbeats pro. To urządzenie pozwala na odtwarzanie dźwięku przy niższym jego natężeniu, prowadząc do zredukowanego zmęczenia ucha, gdyż nie ma potrzeby zwiększania głośności aby pokonać dźwięki zewnętrzne. £224. The Bose are better built, have a more neutral default sound profile, which some users may prefer, and their ANC can block out more bass-range noise. Bose QC Earbuds II vs. These buds also carry most of the AirPods Pro 2’s audio features (all those mentioned above). 2 ounces each—compared to 0. However, the 2nd generation model also expands that rating to cover the case too, so you won’t have to worry Nov 17, 2019 · Beats’ proprietary Fast Fuel technology will give the Powerbeats Pro 4. Bose QuietControl 30. QuietComfort Ultra Earbuds + AirFly Pro Set. Related AirPods Find My Apple Inc. Sony unveiled the WF-1000XM5 earbuds Oct 31, 2019 · On the way back APPs. Jan 2, 2024 · Now the AirPods Pro 2’s have a significantly smaller case than the Bose QC Ultra’s. 28 x 6. In my opinion, if you bought the AirPods Pro 2 it would be a waste of money as you would have two pairs of wireless earbuds. Active users may instead find the Bose earbuds’ rugged durability and in-ear Dec 6, 2017 · The Apple EarPods and the Bose QuietComfort 25 are wired, so their range is based on their cable length, which is 3. 37 x 3. jj iz np en uf gy uj kh ix qe