The Bose Frames are non-polarized sunglasses with special speakers built into each arm. The idea is that they’re designed to look like regular sunglasses, but also act as Bluetooth headphones. Since there’s no earbud that actually goes into your ears, the speakers have been engineered to shoot audio down into your ears; the neat thing is that the Bose Frames do a very good job at masking your audio so that the people around you can’t really hear what you’re listening to. They are available in two different frame styles, round (Rondo) or square (Aldo).
In the professional audio sector, headphones are used in live situations by disc jockeys with a DJ mixer, and sound engineers for monitoring signal sources. In radio studios, DJs use a pair of headphones when talking to the microphone while the speakers are turned off to eliminate acoustic feedback while monitoring their own voice. In studio recordings, musicians and singers use headphones to play or sing along to a backing track or band. In military applications, audio signals of many varieties are monitored using headphones.
The QuietComfort 30s are Bose’s wireless in-ear headphones with active noise cancellation, and they’ve set the bar for the category since they were released in 2016. The QuietComfort 30s utilize the same StayHear+ tips as all Bose’s other in-ear headphones and they use the same app as the company’s other QuietComfort headphones. The one caveat is that the QuietComfort 30s are a neckband-style of wireless headphone, so they’re fairly heavy and probably best served for office settings.
Gaming headsets are headphones that have a microphone attached and allow users to speak to other people and hear them with the same device. In fact, gaming headsets have other practical applications as well. You can use them in business or personal situations when you want to speak to people on a computer using a video phone program or social media chat room. Although these work for music applications, they're more suited for conversational clarity.

Supra-aural headphones or on-ear headphones have pads that press against the ears, rather than around them. They were commonly bundled with personal stereos during the 1980s. This type of headphone generally tends to be smaller and lighter than circumaural headphones, resulting in less attenuation of outside noise. Supra-aural headphones can also lead to discomfort due to the pressure on the ear as compared to circumaural headphones that sit around the ear. Comfort may vary due to the earcup material.
Binaural recordings use a different microphone technique to encode direction directly as phase, with very little amplitude difference below 2 kHz, often using a dummy head. They can produce a surprisingly lifelike spatial impression through headphones. Commercial recordings almost always use stereo recording, rather than binaural, because loudspeaker listening is more common than headphone listening.
The moving coil driver, more commonly referred to as a "dynamic" driver is the most common type used in headphones. It consists of a stationary magnet element affixed to the frame of the headphone, which sets up a static magnetic field. The magnet in headphones is typically composed of ferrite or neodymium. A voice coil, a light coil of wire, is suspended in the magnetic field of the magnet, attached to a diaphragm, typically fabricated from lightweight, high-stiffness-to-mass-ratio cellulose, polymer, carbon material, paper or the like. When the varying current of an audio signal is passed through the coil, it creates a varying magnetic field that reacts against the static magnetic field, exerting a varying force on the coil causing it and the attached diaphragm to vibrate. The vibrating diaphragm pushes on the air to produce sound waves.
If you want headphones for gaming or watching movies, get some that support multi-channel surround sound. Some high-end headphones include technology that simulates surround sound, so sound effects feel like they’re coming from different directions. These headphones do a surprisingly good job at replicating the home theater experience and create an immersive experience for listeners. If you’re into big-budget blockbusters or first-person shooters and don’t have the room for a full-blown surround sound system, go for the next best thing and get headphones that support multi-channel audio.
Semi-open headphones, have a design that can be considered as a compromise between open-back headphones and closed-back headphones. Some[who?] believe the term "semi-open" is purely there for marketing purposes. There is no exact definition for the term semi-open headphone. Where the open-back approach has hardly any measure to block sound at the outer side of the diaphragm and the closed-back approach really has a closed chamber at the outer side of the diaphragm, a semi-open headphone can have a chamber to partially block sound while letting some sound through via openings or vents.
I already own a few headphones, namely the Audio-Technica ATH-Pro500MK2, ATH-T500, Sennheiser PX 100 II & PX 200 II, and the Philips Downtown and Uptown (Rule #3). I’m thinking of adding a new one and I can’t decide between the Beats Solo 2, Grado SR80e, and Sony MDR-10RC (budget constraints). I listen mostly Pop/Rock and Classical music and I have a cheap (Fiio E06) headphone amplifier.

Generally, headphones are able to reproduce richer low-end audio, since they have larger drivers than earphones and they don't rely on an in-ear seal to deliver sound. Some listeners also find headphones more comfortable to wear, and easier to put on and take off, than they do earphones. This naturally means that headphones are bulkier, and less suited to the gym.
A planar magnetic driver consists of a relatively large membrane that contains an embedded wire pattern. This membrane is suspended between two sets of permanent, oppositely aligned, magnets. A current passed through the wires embedded in the membrane produces a magnetic field that reacts with the field of the permanent magnets to induce movement in the membrane, which produces sound.
Electrostatic drivers consist of a thin, electrically charged diaphragm, typically a coated PET film membrane, suspended between two perforated metal plates (electrodes). The electrical sound signal is applied to the electrodes creating an electrical field; depending on the polarity of this field, the diaphragm is drawn towards one of the plates. Air is forced through the perforations; combined with a continuously changing electrical signal driving the membrane, a sound wave is generated. Electrostatic headphones are usually more expensive than moving-coil ones, and are comparatively uncommon. In addition, a special amplifier is required to amplify the signal to deflect the membrane, which often requires electrical potentials in the range of 100 to 1000 volts.

Of the tested codecs we met, aptX and aptX HD fared the best out of all our candidates. While that may seem strange to say, on the whole their results were right where they needed to be in order to stand in for a wire for commuters, and listeners over 40. You’d really only run into issues at high volumes (90+dB), so while aptX isn’t quite able to keep up with CD quality, aptX HD is able to get extremely close to the mark with a little processing creativeness. Both codecs fall short in the highest frequencies a human could potentially hear, but the vast majority of people can’t hear sounds over 18kHz anyway.
An electret driver functions along the same electromechanical means as an electrostatic driver. However the electret driver has a permanent charge built into it, whereas electrostatics have the charge applied to the driver by an external generator. Electret and electrostatic headphones are relatively uncommon. Original electrets were also typically cheaper and lower in technical capability and fidelity than electrostatics. Patent applications from 2009-2013 have been approved that show by using different materials, i.e. a "Fluorinated cyclic olefin electret film", Frequency response chart readings can reach 50 kHz at 100db. When these new improved electrets are combined with a traditional dome headphone driver, headphones can be produced that are recognised by the Japan Audio Society as worthy of joining the Hi Res Audio program. US patents 8,559,660 B2. 7,732,547 B2.7,879,446 B2.7,498,699 B2.
The number one rule to understand when embarking on your headphone-search journey is to understand that there is no one headphone to rule them all. Like automobiles, headphones are made for different purposes. You have the supercars, roadsters, SUVs, 4x4s, sedans, to the compacts, and you chose what’s best for your day to day needs. There is no one car that can tackle snow and win races on the drag strip. The sooner you understand this fact, the more money you will save.

Dirac is mainly for resonance (narrow band) taming and not suitable for normal EQ. Accudio is good. But since the L1 already has a strong bass emphasis, boosting mids or treble just makes the imbalance worse – i.e. the freq. response becomes more ragged and the sound more harsh. To get a smoother sound and better mids and treble, reduce the bass instead.

In early powered radios, the headphone was part of the vacuum tube's plate circuit and carried dangerous voltages. It was normally connected directly to the positive high voltage battery terminal, and the other battery terminal was securely grounded. The use of bare electrical connections meant that users could be shocked if they touched the bare headphone connections while adjusting an uncomfortable headset.