Headphones

**Bose headphones** are a family of headphone products sold by the Bose Corporation. The company was a  pioneer in the development of headphones that use active noise cancellation technology.

## Timeline of headphones

<templatestyles src="Module:Navbar/styles.css"></templatestyles>

Some names have been abbreviated and at times full names have been shortened to save space
("QC" = QuietComfort; "SE" = Second Edition;"IE" = In-Ear; "MIE" = Mobile In-Ear)
("AE" = Around-Ear; "OE" = On-Ear; "BH" = Bluetooth headset)
Sources: Bose owners guides
## TriPort Headphones

The "triport" earcup structure has three miniature air ducts that claim to allow the drivers to make larger excursions before distorting.

## Bose's work with active noise-cancelling headphones

Bose's consumer range of active noise-cancelling headphones are called QuietComfort. For industrial noise-cancelling applications, Bose produces the A20 Aviation Headset, Space Shuttle Headset and Combat Vehicle Crewman Headset.

### Noise-cancelling headphones development

The idea of personal noise protection by actively controlled headphones was originally documented in a 1960 Russian patent application. In the United States, the idea for active noise cancellation for helicopter and aircraft pilots was patented by Dr. Lawrence J. Fogel as early as the mid 1950s U.S. Patent 2866848, U.S. Patent 2920138, U.S. Patent 2966549 and Canadian patent 631,136. According to Bose, the company started noise-cancellation involvement after Dr. Amar Bose went on a 1978 flight to Europe, utilized the headphones provided during the flight only to conclude that he couldn't really enjoy the sound with the roar of engines in the background."

In 1986, Bose applied their noise-cancellation technology to develop headphones to protect the hearing of pilots participating in the first non-stop around-the-world flight.

One source notes that "nearly simultaneously, the US company Bose and Sennheiser in Germany presented active headsets for aircraft pilots," citing a 1986 American Society of Mechanical Engineers paper about the Bose product and a 1988 *Funkschau* paper about the Sennheiser. Bose's first noise-cancelling headsets were released to the public in 1989.

After about 10 years of research and development Bose released their first consumer level noise reducing headphones for pilots called the *Aviation Headset,* released in 1989. The current model includes (non-adjustable) electronic equalization.

Like all such technology, it mixes an inverted sample of the ambient sound outside the headset with the sound that reaches the inside of the headset, partially cancelling out the noise. Active (battery-powered) noise cancellation is never perfect, and is better at low frequencies than at high frequencies. The power source for these active noise cancellation headphones is batteries. All Bose noise cancellation headphones are closed-air to increase passive noise reduction.

### Commercial airlines

Depending on the flight American Airlines provides QuietComfort 15 headphones or Bose QuietComfort 3 headphones for use by passengers in premium flight classes (sometimes also business-class) on some long-haul flights. Bose has made American Airlines several special edition versions of the QuietComforts starting with the original QC1 that had blue ear cups and an American Airlines logo on them. American Airlines became the first airline to offer the QuietComforts. American Airlines allows each of their First and Business Class passengers to use a pair of the QuietComfort 15 on long-haul flights to Europe, Asia, deep South America and select First Class transcontinental flights.

On 1 July 2006 JAL started to offer QuietComfort 2 headphones to First class customers on some flights

Air-India also offers QuietComfort 3 headphones to its Premium Class customers on some long haul flights. Cathay Pacific provides their First and Business Class passengers a pair of customized Quiet Comfort headphones.

## Noise Reducing Headphones

### Around Ear Noise Cancelling

#### Bose QuietComfort Headphones

 File:BOSE QuietComfort.JPG
The Bose QuietComfort Headphones (also now known as the QC1) was the very first consumer level headphones released by the company in 2000.

The Bose QuietComfort Headphones came with

* an external noise controlling mechanism, which enables the control of both volume and background noise cancellation.
* Bose's patented Acoustic Noise Cancellation Technology
* Active Equalization requiring power to improve the sound quality and counteract the effects of active noise cancelling.
* A carry case for the QuietComfort Headphones

#### Bose QuietComfort 2 Headphones

 File:Bose Quiet Comfort 2.jpg
To address some of the concerns with the QuietComfort Headphones, in 2003, Bose released their successor, the Bose QuietComfort 2 Headphones (also now known as the QC2). Like its predecessor, the QuietComfort 2 Headphones retailed at a suggested price of 299 USD in the US and approximately 480 USD in Europe (£275).

Changes from the original QuietComfort Headphones include:

* TriPort headphone technology giving improved bass and treble
* Lower noise floor
* Improved acoustics
* Removal of the battery box
	+ On-off switch on the right earcup
	+ Collapsable one-wire attenuator to control the noise cancellation level (from two levels)
* Use of only one AAA battery inside the right earcup, instead of two AA batteries in the former battery box
* Foldable form-factor
* Smaller carrying case
* Single Cord that can be detached if the user doesn't want to listen to music

There is a trade in program for previous owners wishing to upgrade to the QuietComfort headphones.

##### QuietComfort 2 specifications

* **Connector:** 3.5 mm (1/8 inch) stereo mini plug, ¼ inch adapter and two prong airline adaptor
* **Cord Length:** 6 feet (11 feet with included 5-foot extension cable)
* **Headphone Dimensions:** 7.75"h x 6.5"w x 1.63"d
* **Carry Case Dimensions:** 8.25"h x 7.5"w x 2"d
* **Weight:** 6.9 ounces, with cables included
* **Frequency Response:** 20 Hz to 18 kHz
* **Operating temperature:** 0°C to +40°C
* **Storage Temperature:** −30°C to +70°C
* **Battery:** One AAA alkaline battery
* **Battery Life:** 30 to 40 hours of use
* **Cup Rotation:** Vertical axis ±20°; Horizontal axis +45° / −5°; Storage Position 90°
* **Warranty:** 1 Year
* **Price:** $ 299 USD; £ 275.00 GBP; € 399.00

Source: Bose QuietComfort FAQ

##### Bose QuietComfort 2 Headphones "Second Edition"

 File:Bose QC2 2nd Ed.jpg
The Bose QuietComfort 2 Second Edition was introduced August 2005. The earcup color was changed to silver, "acoustic equalization" was added, and the earcups incorporated magnetic pads.

The QC2 is powered by a single AAA battery inside the right earcup with a built-in attenuator. The cord can be detached at the user's discretion for stand-alone noise cancellation.

JAL provides Bose QuietComfort 2 Headphones for use by passengers in premium flight classes on some long-haul flights.

A cellphone adapter has been made available to users for the second edition and QC3 headphones.

#### Bose QuietComfort 15 Headphones

On August 19, 2009 Bose announced the release of the Bose QC15's. A model to supersede QuietComfort 2 Revision 2, both the QuietComfort 2 Revision 2 and the QuietComfort 15 share the same cosmetic design, but the similarities end there. Bose worked to refine the Acoustic Noise Cancellation engine so each earcup would use two microphones instead of one on the inside and outside of the earcup. The new headphones also have a slot for a AAA sized battery, as well as a "High / Lo" switch to adjust for sources with high and low output levels, to better help the listener with volume control and the cushions are redesigned. . The QuietComfort 15 was released 20 August 20 2009, priced at $299. By August of 2011 the QC15's included an inline three-button iPod/iPhone remote and microphone that allows users to pause and move forward and back through their music and adjust the volume.

#### QuietComfort 25

 File:Bose QuietComfort 25 Acoustic Noise Cancelling Headphones with Carry Case.jpg
The "QuietComfort 25" (QC25) over-ear headphones were released in 2015 as the replacement for the Template:Nobr. Unlike its predecessors, the QC25s can be used (without the noise-cancelling function) while the battery is dead. Another change is the elimination of the Hi/Low switch which increased the input gain for low-output sources like MP3 players.

In 2015, the QC25s won the *What Hi-Fi?* Sound and Vision annual award for "Best Noise Cancelling Headphones".[*citation needed*]

#### QuietComfort 35

 File:Bose QuietComfort 35 II Wireless Headphones.jpg
The QuietComfort 35 was released in 2016 as a successor to the 25. It supports Bluetooth wireless operation, the Bose Connect mobile app for advanced audio control, and contains an embedded rechargeable battery.

#### QuietComfort 35 series II

In 2017, Bose released an updated model known as the QuietComfort 35 II, which adds a customizable "action" button on the left ear cap. By default, it is mapped to activate the Google Assistant, making it the first headphones to integrate with the service.

The QC35 II was reviewed favourably for their noise cancellation, audio quality and comfort.

In July 2019, users began to report that a firmware update to the QC35 II had inhibited the performance of the noise cancellation features. Bose stated that it had not made any changes to noise cancellation functions in their firmware. Some users performed firmware downgrades, but Bose later prevented this for security reasons. In October 2019, as part of an investigation, Bose began to allow owners within a "reasonable" proximity to the company's headquarters in Framingham, Massachusetts, to request a visit by a technician.

In 2020, Bose released the Bose QC35 II Gaming, which adds a gaming mic.

#### Noise Cancelling Headphones 700

In 2019, Bose released the Noise Cancelling Headphones 700, a new high-end product positioned above the QC 35.

It features a more contemporary design with a stainless steel band and are controlled using a mix of buttons and touch-sensitive areas on the cups. Unlike the QC 35, they do not fold in half, but their earcups can rotate for storage. The embedded rechargeable battery is not replaceable which limits the lifespan of the headphones to the life of the battery. Bose promoted improvements to sound quality, noise cancellation and voice call quality over the QC 35. The NCH700 can also connect to two devices simultaneously, and integrate with Amazon Alexa and Siri in addition to the Google Assistant.

#### QuietComfort 45

In 2021, Bose released the Bose QuietComfort 45 headphones. In addition to adding USB-C support to the QuietComfort model, Bose also added a fourth external microphone to improve call quality and Bluetooth 5.1 to improve wireless range.

### On Ear Noise Cancelling

#### Bose QuietComfort 3 Headphones

 File:Bose QC3.jpg
Bose released the *QuietComfort 3 Acoustic Noise Cancelling Headphones* ("QC3") on June 15, 2006, the company's first pair of on-ear headphones. Bose states that, although headphones which envelope the ear provide greater passive noise isolation, the QC3s have the same amount of total noise reduction as the QC2s due to improved active noise cancellation. Memory foam is used to improve the passive noise isolation. In 2006, they were the first headphones to receive a Sound & Vision Editor's Choice award.

The QC3 feedback algorithm is suspected to become unstable in certain circumstances, causing a high pitched "squealing" in the following situations:

* Pressure on the earpads, such as that caused by the user leaning their head against a flat surface.
* Manually pressing on the headphones.

The QC3 uses memory foam to conform to the ear and provide a good acoustic seal without uncomfortable pressure. The earcups are powered by a rechargeable lithium-ion battery instead with a battery life of at least twenty hours.

In 2006 QuietComfort 3 were the first headphones to receive a *Sound & Vision* Editor's Choice award., in the same year they were awarded a Potentials Magazine Gold Star Award

* 2007 Red Dot Award for product design on QuietComfort 3

### In-Ear Noise Cancelling

#### QuietComfort 20

The "QuietComfort 20" (QC20) and QC20i in-ear headphones were released in 2015 and are the company's first in-ear noise-cancelling headphones. The QC20 model is for Android, Windows and Blackberry devices, while the QC20i is designed for Apple devices and includes volume controls on the remote.

The noise-cancelling hardware and micro-USB supported rechargeable battery is contained with a box located near the headphone jack, similar to the Template:Nobr. The earbuds are similar to the IE2 headphones. A button on the remote labelled "Aware Mode" reduces noise-cancellation to let in ambient noise.

#### QuietControl 30

The "QuietControl 30" (QC30) in-ear wireless headphones were sold from 2016 until 2020.

#### QuietComfort Earbuds

The *QuietComfort Earbuds* (QC Earbuds) were released on 5 October 2020. The headset feature noise-cancelling headphones coupled with a noise-canceling microphone in the right headphone. The battery life is 6 hours and the USB-C supported carry case has an inbuilt lithium iodine battery can charge them two times.

With the proprietary Bose Music app (requires registration), the QC Earbuds can be customized with touch control to increase/decrease volume by swiping the right in-ear headphone and battery status by double tapping the left in-ear headphone, and default noise-cancelling mode when only one headphone is plugged into the ear. The settings are stored in the firmware of the headphones, so the app can be uninstalled once they have been configured.

## Around-Ear Headphones

### Bose Triport / Around-Ear (AE) Headphones

 File:Bose TriPort.jpg
Introduced in 2002 and originally called the 'TriPort headphones', they were renamed the 'Bose Around-Ear (AE) Headphones' in October 2006. The Bose Around-Ear headphones don't have active noise cancellation (as opposed to the QuietComfort 2 headphones). For a short time, the Bose Around-Ear headphones were also sold with a Bose-badged CD player as a part of the company's 'TriPort CD Music System'.

A "New York Times" reviewer commented that "the research effort paid off: the [Bose Around-Ear Headphone] has very full sound and works equally well with all types of music," but judged a competitor's headset, priced at a lower price of the Around-Ear's, to be "just as comfortable and just as light, and the sound it produced was just as full and clear." The competitive product was a Sennheiser HD 497, which "like the Bose [Around-Ear Headphones]... deliberately leaks some frequencies to balance the sound." However, the reviewer notes that the HD 497 are bigger than the AE.

A few months after the release of the Apple iPhone in 2007, Bose redesigned the AE's headphone plug to make it iPhone compatible

### AE2

 File:BoseAE2.JPG
On October 15, 2010, Bose released the AE2 on-ear headphones, a design which envelopes the whole ear. Connection is through a detachable cord that connects to the left side of the headphones.  The foam on the original headband of the original TriPorts has been replaced with a synthetic leather and the earpieces rotate flat for improved storage, similar to the QuietComfort models.

## On-Ear headphones

### Bose On-Ear headphones

The *Bose On-Ear* headphones (also called OE1) were introduced on October 12, 2006. The Bose On-Ear is similar to the Bose QuietComfort 3 Headphones, but without active noise cancellation. The cord is detachable; both 43 and 16-inch cords are available. Shortly after the release of the iPhone in 2007 Bose redesigned the OE's headphone plug on the detachable cords to make it iPhone compatible. In 2008, the Red Dot Award for product design was awarded to Bose On-Ear Headphones.

### OE2

Bose replaced it's previous On Ear headphones in October 2011. It is smaller in size and lighter in weight. This version comes in two colors, white and black. Aside from the color there are two variations the OE2's and OE2*i*s. The only difference being that the OE2*i*s include an apple specific inline three-button iPod/iPhone remote and microphone that allows users to pause and move forward and back through their music and adjust the volume

## In-Ear Headphones

### Bose In-Ear (IE) Headphones

 File:IE versions.jpg
The *Bose In-Ear* headphones were introduced on October 12, 2006 as the company's first earbud product. Three eartips of different sizes are included. Bose claims that the IE's silicone tips are shaped to fit the ear's natural curves more closely.

The TriPort airducts in this product consist of two air ducts in the large grille, and one "stand-alone" air duct on top of each earbud.

After customer complaints stating that the *"silicone ear tips become detached under certain conditions"* and that the *"stability of the headphones during certain activities, such as exercise, could be improved"*, Bose set up a website to send redesigned ear tips and a new clip and the lanyard for free.

#### IE v2

On March 15, 2007 Bose redesigned the headphones which fixed many of the issues with the silicone ear tip stability. The cord for the redesigned headphones is now black and white to signify the change.

#### IE v3

Shortly after the release of the iPhone, on October 11, 2007, Bose redesigned the IE's for a 3rd time. They made the headphone plug iPhone-compatible and removed the circuit board from the headphone plug and moved it up the cord. Bose also included a shirt clip and a lanyard on this revision as well for stability during active use.

Sometime before Christmas of 2008 Bose added a hologram to the back of the circuit board, and other distinctive features, to aid in the identification of counterfeits. A new plastic carton has a window to show the hologram on the back of the circuit board of the In-Ear Headphones for easy detection of genuine Bose products.

### IE2

On August, 16 2010 Bose announced the IE2's. Unlike "canalphones", the IE2 models are not inserted into the ear canal, they have a fit similar to an earbud and are not considered or even marketed as noise cancelling nor noise isolation headphones. According to Bose it incorporates improved acoustics and improved stability with the tips, which are required to hold the headphones in place, called "StayHear" tips.

## Mobile Headphones

### Bose Mobile In-Ear (MIE) Headphones

On July 16, 2009 Bose released a mobile version of their In-Ear headsets. It features an in-line microphone and control to navigate music remotely on select cellphones/music players, and answer/end button for calls and includes 2.5mm cellphone adapters.

### MIE2

On August, 16 2010 Bose announced the MIE2's. According to Bose it incorporates improved acoustics and improved stability with "StayHear tips" The MIE2's are designed for cellphone use and come with 2.5mm adapters.

### MIE2*i*

On August, 16 2010 Bose announced the MIE2*i*. According to Bose it incorporates improved acoustics and improved stability with "StayHear tips" The MIE2*i'*s are designed for cellphone use and come with 2.5mm adapters. This headphone designed for apple devices (including the iPhone, iPod, iMac, iPad, etc.) incorporates an in-line remote control for volume, track up/down and access to select Apple voice applications. This version is being released at the same price as the MIE2's.

### Bluetooth Headset

On November 1, 2010, Bose released its first wireless Bluetooth headset. It has technology that will allow a user to move between a quiet and loud environment, without having to change volume controls. The headset has a special design that allows its built-in mic to selectively sense a user’s voice, and acoustically reject the background sounds that interfere with it — so that the caller is heard more, and distractions are heard less. The headset also comes with Bose StayHear tips for a comfy and secure fit without the need for an ear hook. The headset also has a sliding on/off switch for answering calls or turning the device on and off. Finally, the Bose Bluetooth headset comes with a protective case and 3 ear-tips.

### Bluetooth Headset 2

On October 2011, Bose released it's second generation Bluetooth headset. Bose releases Bluetooth headset Series 2]</ref> It comes in both a left and a right ear version, supports A2DP and improved Bose's Adaptive Audio Adjustment technology that will allow a user to move between a quiet and loud environment, without having to change volume controls. The headset has a special design that allows its built-in mic to selectively sense a user’s voice, and acoustically reject the background sounds that interfere with it — so that the caller is heard more, and distractions are heard less.

Just like the previous version the headset also comes with 3 different sized Bose StayHear tips for a comfy and secure fit without the need for an ear hook. The headset also has a volume control, a command button for answering calls, and a sliding on/off switch.

### Sleepbuds

In October 2019, Bose announced that it would discontinue selling Sleepbuds, which were earphones designed to be worn when sleeping. When connected with a smartphone app, the earphones played soothing, ambient sounds to help mask exterior noises and relax the wearer. However, due to many complaints about poor battery life, Bose will no longer manufacture and sell the product. Bose is allowing customers to return the sleepbuds for a full refund, and gave an explanation on the official website as to why the earphones were being discontinued. John Roselli, General Manager of Bose Corp, said: "We’ll go back to research, because we are committed to making our vision a reality. But today, we begin with something more important – doing whatever it takes to make things right with you."

Sleepbuds II with improved design and no more battery issues was released October 6th 2020.

#### Sleepbuds II

The Sleepbuds were released in June 2018, but discontinued in October 2019. The Sleepbuds II were released in October 2020. They are designed to help wearers fall asleep faster by combining passive noise cancelling, streamed ambient sound, and silicone ear-tips. The battery life is 16 hours and the USB-C supported carry case has a built-in lithium iodine battery that allows for three recharges. The Sleepbuds II are dependent on the proprietary Bose Sleep app for Android or iOS, which provides ambient sounds and an alarm clock. However, some users might find it inconvenient that it is required to manually synchronize the Bose Sleep app with events from other apps to not miss them, as the smartphone speaker will be masked by the headphones that only allow audio permission from the Bose Sleep. Also, despite the very small size of the headphones, they may cause pressure pain on the ear for side-sleepers.

## Aviation Headsets

### Bose Aviation Headset Series I

The Bose Series I Aviation Headset is introduced in 1989 as the first commercially available Active Noise Cancellation headset specially designed for pilots, also used by the United States Air Force.

Initially, the Bose Aviation Family were not to be sold to civilian markets, since this is considered to Bose as a military application.

Although the Aviation Headset used active noise reduction technology, the headphones relied more upon the clamping force of the headphones and other passive noise reducing technology. Also Bose used a 9-pin connection instead of the commonly used 6-pin comm. connection.

The Aviation Headset includes

* Active Equalization - Clean full sound quality that enhances intelligibility of radio and intercom audio and enables natural sounding music reproduction
* Acoustic Noise Cancellation - reduces noise over the full range of the human hearing
* Integrated boom Detaches, to be worn on either the right or left earcup.
* Portable Carry Case for headphone and accessories

There is an *installed control module* that will allow the headphones to be permanently installed in the aircraft thus eliminating the need for battery power.

Series I aviation headsets are distinguished by the clear windows on the earcups or by noting that the on/off switch and volume control are located on the separate control module.

#### Aviation Headset Series I specifications

* **Weight:** 18 ounces
* **Battery:** NiCa Battery
* **Battery Life:** 8 hours of use
* **Shielded:** No
* **Warranty:** 2 Years
* **Price:** $995 USD

### Bose Aviation Headset Series II

The Bose Series II Aviation Headset is introduced in 1995 with improvements for the aviation industry, earning the Aircraft Owners and Pilots Association’s (AOPA) “Product of the Year” award.

Reducing noise is important for intelligibility. U.S. Air Force tests, achieved intelligibility scores of 95% at 115 dB—compared to 80% for conventional headsets.

Changes from Series I to II are

* Volume was put on the headbands
* On/off buttons were put on the headband
* Individual left and right volume controls
* Relied less on passive noise reduction than its predecessor.
* Now using the more commonly found 6-pin comm connection

There is an *installed control module* that will allow the headphones to be permanently installed in the aircraft thus eliminating the need for battery power.

Series II aviation headsets are distinguished by the dual volume controls and on/off switch located on the headset itself.

#### Aviation Headset Series II specifications

* **Weight:** 22 ounces
* **Battery:** Six AA alkaline batteries
* **Battery Life:** 12 – 16 hours of use
* **Shielded:** No
* **Warranty:** 2 Years
* **Price:** $995.00 USD

### Bose Aviation Headset X "Magellan"

The Bose Aviation Headset X (Pronounced ten not the letter X), released in 1998, designed for pilots also used by the United States Air Force.

The TriPort speakers were introduced with the release of the Aviation X headsets. With their introduction not only was the sound quality improved over its predecessor, but due to its design the weight of the headphones was reduced. The TriPort speakers leave more space inside the ear cups for passive attenuation and allows for reduced headband force. This is mainly since the porting technology diminished the need for more passive noise reducing techniques such as clamping force and extra padding. But these headphones do have more passive noise reduction than the QC2’s giving them better noise reducing abilities with the same active noise reduction technology.

Reducing noise is important for intelligibility. U.S. Air Force tests on their previous Bose Acoustic Noise Cancelling headsets achieved intelligibility scores of 95% at 115 dB—compared to 80% for conventional headsets. The Bose Aviation Headset X offers even more noise reduction.

The Improvements over the Series II include

* TriPort speaker technology giving a lower bass, a lighter weight, and significantly reduced clamping force.
* Redesigned Boom microphone - for increased loudness and improved pivot design for more accurate positioning of the boom near the pilot's mouth
* Low battery life indicator - Flashes red when less than 5 hours of battery life remain.
* Improved immunity from Electro-Magnetic Interference (EMI) - Reduces noise prevalent in larger business jets and military applications.
* Ability to use with a helicopter with an additional adaptor [1]

There is an *installed control module* that will allow the headphones to be permanently installed in the aircraft thus eliminating the need for battery power.

The Bose Aviation Headset X costs $995. Keep in mind that the Bose Aviation X was designed to be more of a military and/or aviational application and cannot be used to create and/or listen to music, although it's possible to obtain the Bose Aviation X through civilian channels, mainly through Bose-owned outlets.

Aviation Headset X was voted #1 by *Professional Pilot* Magazine’s *headset preference survey* 5 years in a Row from 2000 to 2005 (Headset Preference Survey, 12/05)

#### Aviation Headset X "Magellan" specifications

* **Sensitivity/Sound pressure level:** 90 dB/mW
* **Impedance:** 162 ohms Monaural; 320 ohms Stereo
* **Battery:** One 9V battery
* **Battery Life:** 20 hours of use
* **Dimensions:** (4.5 to 5.7)"h (4.8 to 6.3)"w
* **Weight:** 12 ounces or 340 grams
* **Frequency Response:** 15 Hz to 15 kHz
* **Shielded:** Yes
* **Warranty:** 2 Years
* **Price:** $995 USD

Source: Bose Aviation X owners manual

### Bose Aviation Headset X "Explorer"

The original Bose Aviation Headset X ("ten") was released in 1998. This was Bose's first product using "triport" technology, and according to Bose was lighter in weight, used less headband force, had better sound, and better noise reduction than Bose's previous aviation headset.

Aviation Headset X was voted #1 by *Professional Pilot* magazine's *headset preference survey* five years in a row from 2000 to 2005.

The July 2003 "Explorer" model added improvements in the "down cable" assembly (including the boom microphone and battery pack).

Bose offers an accessory for this model which allows the headphone to be permanently installed in the aircraft and eliminates the need for battery power, and offers trade-up programs for earlier models.

### A20 aviation headset

Released on July 26, 2010 as an upgrade to the previous "Aviation Headset X" (aka A10), they are noise reducing headphones for pilots. It either runs on two AA batteries for 45 hours or is powered by the airplanes electrical system. It has an Aux in for a separate audio device, and better noise reduction and less clamping force than its predecessor. There are two models, one that includes a Bluetooth kit for cellphones or one that excludes this feature.

From 2000 to 2005 Aviation Headset X was voted #1 by *Professional Pilot* magazine's *headset preference survey* five years in a row.

### ProFlight (Series 1) Aviation Headset

The "Bose ProFlight Aviation Headset" was sold from 2018 until 2019. It was Bose's first Lightweight, in-ear active noise cancellation for long-term comfort over extended flights, with many new features designed specifically for airline and corporate aircraft flight decks. With more than 30 US design and utility patents and many new features The ProFlight is a technologically advanced, feature-rich aviation headset designed for professional pilots.

### ProFlight (Series 2) Aviation Headset

The "Bose ProFlight Series 2 Aviation Headset" was was released in 2019. The reason for the quick discontinuation and release of the series 2 was due to several major design defects; such as poor music quality, difficulty to put on and falling off while turning your head.

## Non-Consumer Headphones

### Space shuttle headset

Bose makes noise-canceling aviation headsets which have been used in the Space Shuttle, where the noise cancellation feature helps prevent astronaut hearing damage.

### Combat Vehicle Crewman Headset

In 1993 Bose introduced an active noise reduction system for use by crews in United States Army combat vehicles.

At noise levels of 115dBA SPL, Bose noise cancelling headsets improves speech intelligibility scores to 95%, compared to 80% for conventional headsets. At low frequencies, Bose headsets are much more effective in attenuating noise than passive noise reduction headsets. A binaural talk-through feature allows crewmen to talk directly to each other without removing their headsets.

This product is not available to civilian consumers.

### Triport Tactical Headset

The Triport Tactical Headset (TTH) introduced in 2004, also called the Improved Tactical Headset (ITH), is an improved version of the Combat Vehicle Crewman Headset, is in widespread use today. This system is for use in wheeled vehicles that while quieter can produce 95dBA SPL or higher. It fits under infantry ballistic helmet.

## Awards

* 2002 Red Dot award for product design on the QuietComfort 1
* 2004 Red Dot award for product design on the QuietComfort 2
* 2000 to 2005 Aviation Headset X was voted #1 by *Professional Pilot* magazine's *headset preference survey* five years in a row.
* 2006 QuietComfort 3 were the first headphones to receive a *Sound & Vision* Editor's Choice award.
* 2006 Potentials Magazine Gold Star Award for the QuietComfort 3
* 2007 Red Dot Award for product design on QuietComfort 3
* 2008 Red Dot Award for product design - On-Ear Headphones

## References

1. ↑ Bose Owner's Guides for Headphones and Headsets. Retrieved November 15, 2009.
2. ↑ 2.0 2.1 < src="Module:Citation/CS1/styles.css"></>Tokhi, Osman (2002). *Active Sound and Vibration Control*. Institution of Electrical Engineers. ISBN 0-85296-038-7. Unknown parameter `|coauthors=` ignored (`|author=` suggested) (help) p. 13
3. ↑ A. V. Bykhovskii. Sposob polawlenija shuma w scluchowom organe (Technique for noise suppression in the ear), 1960, Patent UdSSR SU 133 631. Filed: 24 August 1949. Published: Patent Bulletin No. 22. Citation from Tokhi and Veres (2002).
4. ↑ 4.0 4.1 < src="Module:Citation/CS1/styles.css"></>"Can the science of acoustics reduce the roar of an airplane engine?". Bose Corporation. Retrieved 2006-08-06.
5. ↑ < src="Module:Citation/CS1/styles.css"></>"Escape the Noise - Bose Learning Center".
6. ↑ 6.0 6.1 < src="Module:Citation/CS1/styles.css"></>"Premium Comfort With Bose Quality". *American Airlines website*. Retrieved 2008-02-01.
7. ↑ < src="Module:Citation/CS1/styles.css"></>"JAL News". *Japan Airlines website*. Retrieved 2008-02-01.
8. ↑ 8.0 8.1 < src="Module:Citation/CS1/styles.css"></>"JAL International Flights - In-flight Entertainment(First Class)". *Japan Airlines website*. Retrieved 2008-02-01.
9. ↑ Escape the Noise - Featured Story - Bose Learning Center
10. ↑ QC2 Accessories
11. ↑ Communication Kit - list of compatible cell phones
12. ↑ Bose unveils new QuietComfort 15 headphones - cnet
13. ↑ Bose Quietly Updates Its QuietComfort Noise-Canceling Headphones (With Ears-On) - gizmodo
14. ↑ Bose Improves, Replaces QuietComfort 2 Headphones - pcmag
15. ↑ < src="Module:Citation/CS1/styles.css"></>"Review: Bose QC15 and AE2i headphones". Techguide.com.au. 2012-02-10. Retrieved 2012-02-14.
16. ↑ < src="Module:Citation/CS1/styles.css"></>"QuietComfort® 25 Acoustic Noise Cancelling Headphones - Bose Product Support". *www.bose.com*. Retrieved 29 June 2019.
17. ↑ < src="Module:Citation/CS1/styles.css"></>Pocket-lint (2016-10-04). "Bose QuietComfort 35 review: The perfect travel companion". *Pocket-lint*. Retrieved 2019-11-27.
18. ↑ < src="Module:Citation/CS1/styles.css"></>Pocket-lint (2019-07-02). "Best Google Assistant headphones: Top smart earphones to buy". *Pocket-lint*. Retrieved 2019-11-27.
19. ↑ < src="Module:Citation/CS1/styles.css"></>Carnoy, David. "Our favorite headphones get Google Assistant: Bose QC35 II, reviewed". *CNET*. Retrieved 2019-11-27.
20. ↑ < src="Module:Citation/CS1/styles.css"></>"Our favorite headphones get Google Assistant: Bose QC35 II, reviewed". *CNET*. Retrieved 2017-12-26.
21. ↑ Template:Cite magazine
22. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose QuietComfort 35 II review". *TechRadar*. Retrieved 2017-12-26.
23. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose QuietComfort 35 II review". *iFans*. Archived from the original on 2017-12-28. Retrieved 2017-12-26.
24. ↑ < src="Module:Citation/CS1/styles.css"></>Welch, Chris (2019-10-16). "Bose is now visiting customers at home to figure out QC35II noise cancellation problems". *The Verge*. Retrieved 2019-11-27.
25. ↑ < src="Module:Citation/CS1/styles.css"></>Welch, Chris (2019-07-16). "Bose QC35 II owners complain of degraded noise cancellation after recent updates". *The Verge*. Retrieved 2019-11-27.
26. ↑ < src="Module:Citation/CS1/styles.css"></>"An Engineer Explains the Magic of Bose's New Headphones". *Gear Patrol*. Retrieved 2019-06-28.
27. ↑ < src="Module:Citation/CS1/styles.css"></>"Best Noise-Canceling Headphones of 2020". *www.msn.com*. Retrieved 2020-01-27.
28. ↑ < src="Module:Citation/CS1/styles.css"></>Welch, Chris (2019-07-19). "Bose Noise Cancelling Headphones 700 review: taking back the crown". *The Verge*. Retrieved 2019-11-27.
29. ↑ Template:Cite magazine
30. ↑ < src="Module:Citation/CS1/styles.css"></>Tambini, Olivia. "Bose Noise Cancelling Headphones 700 review". *TechRadar*. Retrieved 2019-09-16.
31. ↑ < src="Module:Citation/CS1/styles.css"></>"QuietComfort 45 Noise Cancelling Smart Headphones". *Bose*.
32. ↑ 32.0 32.1 2006 *Sound & Vision* Editor's Choice award QuietComfort 3
33. ↑ 33.0 33.1 2006 Potentials Magazine Gold Star Award for the QuietComfort 3
34. ↑ 34.0 34.1 2007 Red Dot Award for product design - QuietComfort 3
35. ↑ < src="Module:Citation/CS1/styles.css"></>"QuietComfort® 20 Acoustic Noise Cancelling Headphones - Bose Product Support". *www.bose.com*. Retrieved 29 June 2019.
36. ↑ < src="Module:Citation/CS1/styles.css"></>"QuietComfort® 20 Acoustic Noise Cancelling® headphones". *www.bose.co.uk*. Archived from the original on 19 January 2014.
37. ↑ < src="Module:Citation/CS1/styles.css"></>"QuietControl 30 Wireless Headphones: Noise Cancelling Earphones - Bose Product Support". *www.bose.com*.
38. ↑ < src="Module:Citation/CS1/styles.css"></>Martin, Chris. "Bose finally takes on Apple and Sony with noise-cancelling QC Earbuds". *Tech Advisor*.
39. ↑ < src="Module:Citation/CS1/styles.css"></>Austen, Ian (2002-10-31). "When Headphones Measure Up to the Music". New York Times. Retrieved 2010-12-25.
40. ↑ OE Features
41. ↑ 2008 Red Dot Award for product design - On-Ear Headphones
42. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose Finally De-Uglied Its On-Ear Headphones". gizmodo. 2011-10-12. Retrieved 2012-02-14.
43. ↑ 43.0 43.1 IE Features
44. ↑ < src="Module:Citation/CS1/styles.css"></>"archive.org - Complimentary Silicone Tips and Stability Enhancement Kit for Bose In-Ear Headphones". *Bose website*. Archived from the original on 2008-03-04. Retrieved 2009-09-23.
45. ↑ BOSE: Customer Service Never Sounded So Sweet
46. ↑ 46.0 46.1 < src="Module:Citation/CS1/styles.css"></>Berger, Ivan (2007-03-22). "Hang on to the Beat With Earbuds That Stay Put". *New York Times*. Retrieved 2008-02-01.
47. ↑ Bose upgrades in-ear headphones with free accessories
48. ↑ Be sure it's Bose
49. ↑ fakeheadphones.com » Fake Bose IE’s Flooding The Market:
50. ↑ China city is haven for fake Fram, bogus Bose.
51. ↑ < src="Module:Citation/CS1/styles.css"></>*Identifying Fake Bose headphones*. YouTube. 2009-03-30. Retrieved 2009-09-23.
52. ↑ 52.0 52.1 52.2 < src="Module:Citation/CS1/styles.css"></>"Bose Announces Three Mobile In-Ear Headphones". gearlog. 2010-08-17. Retrieved 2012-02-14.
53. ↑ < src="Module:Citation/CS1/styles.css"></>"cnet - Bose IE2 Headphones". Reviews.cnet.com. Retrieved 2012-02-14.
54. ↑ 54.0 54.1 54.2 < src="Module:Citation/CS1/styles.css"></>Carnoy, David (2010-08-16). "cnet - Bose debuts new in-ear headphones". News.cnet.com. Retrieved 2012-02-14.
55. ↑ 55.0 55.1 < src="Module:Citation/CS1/styles.css"></>"Bose Readies In-Ear Headphones, Headsets". Twice.com. Retrieved 2012-02-14.
56. ↑ http://products.bose.com/static/email/10\_bluetooth\_launch/index\_h1.html?src=EM280341
57. ↑ http://www.chipchick.com/2010/10/bose-bluetooth-headset.html
58. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose releases Bluetooth headset Series 2". Gizmag.com. 2011-10-05. Retrieved 2012-02-14.
59. ↑ < src="Module:Citation/CS1/styles.css"></>Welch, Chris. "Bose discontinues Sleepbuds due to faulty battery, will offer full refund to all customers". *The Verge*. The Verge. Retrieved 7 October 2019.
60. ↑ < src="Module:Citation/CS1/styles.css"></>Welch, Chris (22 September 2020). "Bose announces Sleepbuds II with improved design and (hopefully) no more battery issues". *The Verge*.
61. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose Launches 'Noise-Masking Sleepbuds,' Earphones Aimed To Help You Sleep Better". *Forbes*. 20 June 2018.
62. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose discontinues its Sleepbuds due to battery issues". *Engadget*. 3 October 2019.
63. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose Sleepbuds II review". *TechRadar*. 27 January 2021.
64. ↑ 64.0 64.1 BOSE Aviation Headset X
65. ↑ < src="Module:Citation/CS1/styles.css"></>"The Bose Aviation Headset X". *AVWeb*. Retrieved 2008-02-01.
66. ↑ 66.0 66.1 66.2 < src="Module:Citation/CS1/styles.css"></>"Headset Preference Survey". *Professional Pilot*: 82. 2005. Unknown parameter `|month=` ignored (help)
67. ↑ < src="Module:Citation/CS1/styles.css"></>"Doug's 2003 Bose X Active Noise Reduction Headset Review". *Doug's Domain: Doug Vetter ATP/CFI*. Retrieved 2008-02-01.
68. ↑ Aviation X Aircraft Accessories
69. ↑ < src="Module:Citation/CS1/styles.css"></>"AVweb, New Bose A20 Headset". Youtube. 2010-07-26. Retrieved 2012-02-14.
70. ↑ < src="Module:Citation/CS1/styles.css"></>Marsh, Alton K. "Bose upgrades to A20 headset". AOPA. Retrieved 2012-02-14.
71. ↑ < src="Module:Citation/CS1/styles.css"></>"ProFlight Aviation Headset". *www.sarasotaavionics.com*. Retrieved 25 December 2020.
72. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose ProFlight Series 2 Headset Pilot feedback leads to an update". Retrieved 25 December 2020.
73. ↑ < src="Module:Citation/CS1/styles.css"></>"MIT "Inventor of the Week Archive"". Web.mit.edu. Retrieved 2012-02-14.
74. ↑ Source: USAF AL data
75. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose Corporation". Amigura. 1975-06-17. Retrieved 2012-02-14.
76. ↑ < src="Module:Citation/CS1/styles.css"></>"Army Technology • Bose Corporation". Army-technology.com. 2011-06-15. Retrieved 2012-02-14.
77. ↑ < src="Module:Citation/CS1/styles.css"></>"Bose - TriPort tactical headset". Worldwide.bose.com. Retrieved 2012-02-14.
78. ↑ 2002 Red Dot award for product design on the QuietComfort 1
79. ↑ 2004 Red Dot award for product design on the QuietComfort 2
80. ↑ 2008 Red Dot Award for product design - On-Ear Headphones

* Design Technica's Bose QuietComfort 2 Headphones Review
* Crutchfield Bose QuietComfort 2 Headphones Review
* Audioholics at Audioreview
* Bose Aviation X owners manual