Soundstage - Soundstage determines the space and environment of sound as created by headphones. Soundstage is the localization and spatial cue not found in the audio content. If you are listening to a movie through your headphones and someone speaks from a distance, the soundstage capabilities of the headphones will create the cue of that distance.

We still wish you could control volume using the same touch gestures that control playback, but then again, you can always ask Alexa to adjust the volume instead. Battery life at 5 hours per charge is about average these days, as is the 20 hours of total playtime enabled by the charging case. Both are minor drawbacks to what is by far the best value in the true wireless market today.

The Powerbeats Pro are an impressive pair of fully wireless buds, but there is one serious drawback we need to point out. The Powerbeats Pro suffered connectivity issues throughout our tests, especially in high-traffic areas or with a phone p;aced in a back pocket. We regularly experienced dropouts while wearing these while running, and the issue repeated across multiple test units and even when using different phones. Your mileage may vary, and hopefully the connection kinks will be worked out on later iterations, but we’d be remiss not to mention the issue.

However, the Bose 700 earphones have a much slimmer profile when folded up, and they have a few updated elements, including more integration with digital assistants, touch controls, and sensors for Bose’s “augmented reality” apps. Bose has kept some of the best-loved features from its older models as well, such as adjustable levels of noise cancellation, a monitoring mode to let in sound from your environment, and an advertised 20-hour battery life. According to Bose, call quality is improved as well, though CR doesn’t test call quality in headphones.
Due to the extremely thin and light diaphragm membrane, often only a few micrometers thick, and the complete absence of moving metalwork, the frequency response of electrostatic headphones usually extends well above the audible limit of approximately 20 kHz. The high frequency response means that the low midband distortion level is maintained to the top of the audible frequency band, which is generally not the case with moving coil drivers. Also, the frequency response peakiness regularly seen in the high frequency region with moving coil drivers is absent. Well-designed electrostatic headphones can produce significantly better sound quality than other types.[citation needed]
This is, understandably, a concern of many potential true wireless users. Allow us to allay your fears—we can say that after over a year of testing, you have to try pretty hard to lose one earpiece. First off, just about every pair we've tested offers an extremely secure in-ear fit without sacrificing comfort. Most of the earpieces are larger than typical in-ears, while still maintaining a lightweight feel, making the likelihood of losing one while exercising (or at any other time) fairly low.
These early headphones used moving iron drivers,[7] with either single-ended or balanced armatures. The common single-ended type used voice coils wound around the poles of a permanent magnet, which were positioned close to a flexible steel diaphragm. The audio current through the coils varied the magnetic field of the magnet, exerting a varying force on the diaphragm, causing it to vibrate, creating sound waves. The requirement for high sensitivity meant that no damping was used, so the frequency response of the diaphragm had large peaks due to resonance, resulting in poor sound quality. These early models lacked padding, and were often uncomfortable to wear for long periods. Their impedance varied; headphones used in telegraph and telephone work had an impedance of 75 ohms. Those used with early wireless radio had more turns of finer wire to increase sensitivity. Impedance of 1000 to 2000 ohms was common, which suited both crystal sets and triode receivers. Some very sensitive headphones, such as those manufactured by Brandes around 1919, were commonly used for early radio work.
If the damage is done there’s nothing that can currently undo it. On the bright side, you can learn more about how hearing loss occurs by reading our explainer piece. You can still take care of your remaining hearing by limiting volume levels to 85dB. That’s the recommended limit for safe-listening, and because earbuds are much closer to your ears than the speakers at a concert it’s even more important to keep that limit in mind.
We have been consistently impressed with JBL's recent offerings, and these headphones—designed in collaboration with Under Armour—are no exception. Our reviews editor Jeffrey Van Camp notes that these are probably best for people with medium- to larger-sized ears. They also don't allow an air gap, which can make music sound muffled if you don't adjust them. But they have a decent five hours of battery life and great features like TalkThru, which lets you lower the music and amplify ambient sound to talk to your workout buddies.
We've got lists of the best cheap true wireless earbuds and best-sounding true wireless earbuds. This list is, simply, the best true wireless earbuds. Remember that to get optimal performance, the best wireless earbuds tend to need to feel comfortable with an ergonomic design and fit right, with a tight seal. If you can't get a snug fit with in-ear headphones, you'll be sadly disappointed and think you got ripped off, which is why I suggest buying from a store with a decent return policy, such as Amazon. 
Our head Gear editor Michael Calore is a fan of the British brand Rock Jaw Audio, which offers excellent sound quality for a moderate price. Like the company's other headphones, you can swap out different tuning filters, with a silver filter for rock and hip-hop, a balanced gold filter, and a black filter for higher audible frequencies. They're also IPX5-rated, sweatproof, and water-resistant, and have a playing time of more than 11 hours.
Soundstage - Soundstage determines the space and environment of sound as created by headphones. Soundstage is the localization and spatial cue not found in the audio content. If you are listening to a movie through your headphones and someone speaks from a distance, the soundstage capabilities of the headphones will create the cue of that distance.
If you can't afford the AirPods Pro, the Anker Soundcore Liberty Air 2 is a good alternative and are a top model for making calls. Like the AirPods Pro, they do a remarkably good job of muffling ambient noise (callers said they could hear me fine even with a lot of street noise around me). While they don't have active noise canceling, they sound nearly as good, fit comfortably and their noise-isolating design passively seals out a lot of ambient noise. They only cost $100. 
The Anker SoundCore Liberty Air earphones look a lot like Apple's AirPods, but at $80 they cost about half as much, and they have a few notable advantages. Unlike the AirPods, the Ankers have an isolating design that will muffle some outside sound, and our testing shows their audio quality is significantly better, too. CR's technicians also note that they fit and stay in place better than many true wireless models.
Unfortunately, more and more phones are ditching the standard headphone jack in favor of USB-C. Besides not being able to charge and play music at the same time, this also means that your options are fairly limited if you want a good pair of earbuds to use every day. Of course, you could always use any of the earbuds on this list with a dongle, but if dongles aren’t your style then don’t worry. We have a list of the best USB-C earbuds you can get so make sure to check that out if none of these piqued your interest.
Not only is Sony’s Walkman still alive and well, but it’s now adapted to aquatic environments and is one of the best choices for swimming and water-based sports available. Simply put, the W-Series Walkman Sports MP3 player is the most waterproof earbuds option we’re aware of, and that fact alone wins them this category. Not only can they be completely submerged and still continue to play music, but they can operate in salt or fresh water at depths of up to 2 meters — so go ahead and jump in the deep end.

Spending hundreds of dollars on a pair of ‘buds isn’t an easy decision and we don’t take it lightly, but when the alternative is spending thousands on insanely high-end IEMs we consider these relatively affordable. At the same time, you’ll eventually get to a point of diminishing return. It’s true you’ll find some amazing headphones if you spend upwards of $1,000, but are they really $800 better than our top pick? We don’t think so.
These are our new favorite workout buds (read our glowing review here). They performed excellently in every way. Music sounds crisp and clear; They can't be shaken out of your ears; And the button controls are easy to use. They're also waterproof and have a stunning nine-hour battery life. But that's not all. They have a few other distinctive features to make them easier to use with a phone, like smart play-and-pause when they're out of your ears and smart call routing if you don't have them on. You can also buy them from Apple.
For older models of telephones, the headset microphone impedance is different from that of the original handset, requiring a telephone amplifier for the telephone headset. A telephone amplifier provides basic pin-alignment similar to a telephone headset adaptor, but it also offers sound amplification for the microphone as well as the loudspeakers. Most models of telephone amplifiers offer volume control for loudspeaker as well as microphone, mute function and switching between headset and handset. Telephone amplifiers are powered by batteries or AC adaptors.
Pairing high sensitivity headphones with power amplifiers can produce dangerously high volumes and damage headphones. The maximum sound pressure level is a matter of preference, with some sources recommending no higher than 110 to 120 dB. In contrast, the American Occupational Safety and Health Administration recommends an average SPL of no more than 85 dB(A) to avoid long-term hearing loss, while the European Union standard EN 50332-1:2013 recommends that volumes above 85 dB(A) include a warning, with an absolute maximum volume (defined using 40–4000 Hz noise) of no more than 100 dB to avoid accidental hearing damage.[14] Using this standard, headphones with sensitivities of 90, 100 and 110 dB (SPL)/V should be driven by an amplifier capable of no more than 3.162, 1.0 and 0.3162 RMS volts at maximum volume setting, respectively to reduce the risk of hearing damage.