Astell & Kern
A South Korean premium audio brand specializing in high-resolution portable music players and related audio equipment.
Last updated August 22, 2026
Overview
Astell & Kern is a South Korean premium consumer-audio brand established by iriver in October 2013. It was created to develop a high-end product line that would succeed and extend the company’s earlier iriver-branded portable media players. The brand’s name became associated with audiophile-oriented digital audio players, high-resolution playback, specialized digital-to-analog conversion hardware, and industrial designs positioned above mainstream portable music devices. The brand’s roots predate its formal creation. In January 2013, iriver introduced the AK100 portable music player at CES. Although the model received a mixed response at launch, it established the product direction that Astell & Kern would develop. The AKR01 in-ear monitors followed in July, providing a companion earphone product for the player. In August, iriver introduced the AK120, which refined the original design and incorporated two Wolfson WM8740 DAC chips. The AK120 was received more favorably, and a limited AK120 Titan edition appeared later that year. After Astell & Kern was formally founded, the company expanded the range beyond incremental player updates. At CES in January 2014, it presented the AK240, a more advanced player that added Wi-Fi connectivity and used an Android-based operating system rather than relying directly on Linux. Later hardware revisions reflected changes in component sourcing: after Cirrus Logic acquired Wolfson, Astell & Kern used Cirrus Logic CS4398 chipsets in relevant products. The company also broadened its audio portfolio with in-ear monitors, headphones, amplifiers, speakers, and home-cinema-oriented products. Astell & Kern’s product development strategy relied extensively on collaborations and limited editions. Its earphone partnerships included Jerry Harvey Audio and Beyerdynamic, while other special models were associated with Blue Note Records, Hyundai Card, Japanese voice actress Kana Hanazawa, and the Korean group Super Junior. These collaborations allowed the brand to combine technical audio products with collectible finishes, artist or institutional identities, and audience-specific editions. Between 2014 and 2016, the portfolio grew from premium portable players into a broader high-end audio ecosystem. Products introduced during this period included the AK100II and AK120II second-generation players, the AK240 and AK240SS, the AK500N network audio system, the smaller and more accessible AK Jr., the AK320, the AK70, the AK T1 all-in-one system, and several high-end in-ear monitors and headphones. The AK500N was designed as a network-oriented audio system with internal solid-state storage and support for lossless streaming from computers and network-attached storage. The brand markets high-resolution audio under the term Mastering Quality Sound, or MQS. Its supported and marketed formats include lossless formats such as WAV, AIFF, FLAC, ALAC, and APE, alongside lossy formats including MP3, AAC, WMA, and OGG. Astell & Kern’s positioning therefore combines portable convenience with audiophile specifications, premium materials, dedicated conversion circuitry, and carefully differentiated product tiers. The available reference material identifies Dreamus as the company’s owner and describes Astell & Kern as manufacturing media players, CD players, headphones, and home-cinema products.
History
Astell & Kern emerged from iriver’s effort to create a premium successor to its established portable-media-player business. The immediate starting point was the AK100, introduced at CES in January 2013. The player attracted divided critical reactions, but it gave iriver a platform for exploring higher-end digital audio. The AKR01 in-ear monitor was released in July as a companion product, followed in August by the AK120. The AK120 made modest design improvements and used two Wolfson WM8740 DAC chips, helping it receive a stronger response than the first-generation AK100. A limited AK120 Titan edition was released in December. In October 2013, iriver formally established Astell & Kern to develop products under the new premium identity. The company’s early strategy combined high-resolution portable players with specialized earphones and carefully specified internal components. The AK240, presented at CES on 9 January 2014, marked an important technical and product-level step. It added Wi-Fi and used an Android-based operating system, distinguishing it from earlier players that operated more directly on Linux. The brand also introduced the AKR02 in-ear monitor and showed home-audio concepts such as a valve amplifier and cylindrical speaker. In May, the AK120II and AK100II represented second-generation versions of earlier players, while the AKR03 was developed with Jerry Harvey Audio. Astell & Kern increasingly used special editions and external collaborations to extend its identity. The AK240 received a Blue Note Records edition commemorating the label’s 75th anniversary. In 2015, the company collaborated with Beyerdynamic on the AK T5p headphones and AK T8iE monitors. It also introduced the AK240 stainless-steel edition, the AK500N network audio system, and the smaller AK Jr. The latter served as a relatively accessible and compact alternative to the company’s larger premium players. Further collaborations included Hyundai Card, Super Junior, and Japanese voice actress Kana Hanazawa, whose limited AK100II edition included a pre-installed song. The portfolio continued to expand during 2015 and 2016. A one-box AK T1 system was released, and the AK320 player was introduced. The company also created additional Jerry Harvey Audio monitor models, including Layla II, Roxanne II, Angie II, and Rosie. In January 2016, it released a copper edition of the AK380, and in July it developed the AK70 player. These launches demonstrate the brand’s movement from a narrow portable-player line toward a wider premium audio offering encompassing headphones, in-ear monitors, networked systems, amplifiers, speakers, and home cinema products. Astell & Kern promotes high-resolution playback using the MQS, or Mastering Quality Sound, designation. The associated formats include both lossless files—such as WAV, AIFF, FLAC, ALAC, and APE—and lossy formats including MP3, AAC, WMA, and OGG. Component changes also shaped the product history. Following Cirrus Logic’s acquisition of Wolfson, the company replaced the earlier Wolfson DAC configuration with Cirrus Logic CS4398 chipsets in relevant models. The available reference identifies Dreamus as the brand’s owner and describes Astell & Kern as a wholly owned business within that company.
- 2016AK70 is developed
Astell & Kern added the AK70 to its portable media-player lineup.
- 2015AK500N and AK Jr expand the range
The company introduced a network audio system and a smaller, more accessible portable player.
- 2014AK240 is unveiled
The AK240 debuted with Wi-Fi connectivity and an Android-based operating system.
- 2014Second-generation player models arrive
The AK100II and AK120II updated the first-generation player models, while the company expanded into monitors and home audio.
- 2013AK100 and AKR01 establish the product direction
iriver introduced the AK100 portable player and later the AKR01 in-ear monitor, creating the foundation for the subsequent premium Astell & Kern range.
- 2013AK120 launches
The AK120 added design refinements and two Wolfson WM8740 DAC chips to the early player platform.
- 2013Astell & Kern is founded
iriver established Astell & Kern in October as a dedicated premium audio operation.
Products and positioning
Premium and audiophile-oriented audio equipment, emphasizing high-resolution playback, dedicated DAC hardware, lossless formats, premium construction, and design-led limited editions.
AK100 and AK120Portable high-resolution music players2013
The AK100 established the premium portable-player direction inherited from iriver, while the AK120 refined the design and used two Wolfson WM8740 DAC chips. The AK120 was followed by a limited Titan edition and became one of the early products associated with Astell & Kern’s audiophile positioning.
AK240Portable high-resolution music player2014
Introduced at CES 2014, the AK240 added Wi-Fi connectivity and used an Android-based operating system. It was presented as a high-end evolution of the brand’s portable-player concept and later received stainless-steel and Blue Note Records special editions.
AK100II and AK120IIPortable high-resolution music players2014
These second-generation models updated the earlier AK100 and AK120 players. They formed part of Astell & Kern’s effort to maintain a differentiated premium portable range while expanding connectivity, component performance, and design variations.
AK500NNetwork audio system2015
The AK500N was an all-in-one network audio system with a 1 TB solid-state drive. It was designed to store music files and stream lossless audio from personal computers and network-attached storage, extending the brand beyond handheld players.
AK Jr.Portable high-resolution music player2015
The AK Jr. was a smaller and more entry-level player than the company’s larger premium models. Its role was to make the Astell & Kern portable-player concept available in a more compact product format.
AK380Portable high-resolution music player
The AK380 was a high-end portable player that received a copper edition in 2016. It represented the brand’s emphasis on premium materials and differentiated hardware variants.
AK70Portable high-resolution music player2016
Developed in 2016, the AK70 continued the company’s portable-player line and occupied a smaller-player segment within the broader Astell & Kern range.
AKR01, AKR02, and AKR03In-ear monitors2013
These monitor products were developed as companion listening devices for Astell & Kern players. The AKR01 began the line, the AKR02 followed it, and the AKR03 was produced in collaboration with Jerry Harvey Audio.
Jerry Harvey Audio monitor seriesIn-ear monitors2016
The collaboration produced models including Layla II, Roxanne II, Angie II, and Rosie. These products extended Astell & Kern’s position from digital playback hardware into specialized audiophile earphones.
AK T5p and AK T8iEHeadphones and in-ear monitors2015
Developed with Beyerdynamic, the AK T5p headphones and AK T8iE monitors formed part of Astell & Kern’s strategy of working with established audio specialists to create branded premium listening products.
AK T1All-in-one audio system2015
The AK T1 was an all-in-one audio product released as the brand expanded from portable players into integrated home listening equipment.
Mastering Quality SoundAudio format and product platform
MQS is Astell & Kern’s designation for high-resolution audio content and playback. The associated file types include WAV, AIFF, FLAC, ALAC, APE, MP3, AAC, WMA, and OGG.
Flagship businesses
- AK240
- AK380
- AK500N
- AK120
- AK100
- AK70
Marketing campaigns
- 2015AK100II x HCC
South Korea
Hyundai Card collaborated with Astell & Kern on a special AK100II model.
Outcome. The partnership resulted in a co-branded limited product.
- 2015Kana Hanazawa AK100II edition
Japan
Astell & Kern created a limited AK100II edition associated with Japanese voice actress Kana Hanazawa.
Outcome. The player included the song “Tadoritsuku Basho” as pre-installed content.
- 2015Super Junior x AK Jr
South Korea
The brand collaborated with the Korean pop group Super Junior on an AK Jr-related special product.
Outcome. The collaboration extended Astell & Kern’s limited-edition strategy into music-fan and entertainment audiences.
- 2014Blue Note Special Limited Edition
Global
Astell & Kern announced a special AK240 edition in association with Blue Note Records’ 75th anniversary.
Outcome. The collaboration produced a limited-edition version of the AK240.
Brand decisions
- 2015Broaden from portable players into home and network audioStrategy
Astell & Kern had established a premium portable-player identity and sought additional products for stationary listening environments.
What changed. The company introduced the AK500N network audio system, the AK T1 all-in-one system, and other home-audio products.
Aftermath. The portfolio was described as including media players, CD players, headphones, and home-cinema products in addition to portable players.
- 2015Add a more accessible portable modelStrategy
The premium range included large and technically advanced players, leaving room for a smaller product tier.
What changed. Astell & Kern released the AK Jr. as a smaller and more entry-level media player.
Aftermath. The AK Jr. complemented rather than replaced the company’s flagship player models.
- 2014Move the flagship player platform to AndroidGeneration change
The company sought to add connectivity and a more flexible software platform to its premium portable-player line.
What changed. The AK240 introduced Wi-Fi and an Android-based operating system rather than operating directly on Linux.
Aftermath. The AK240 became a central high-end model and was subsequently offered in special editions.
- 2013Create a dedicated premium brandStrategy
iriver’s early AK portable players demonstrated an opportunity to serve audiophile customers with products positioned above conventional portable media players.
What changed. iriver founded Astell & Kern in October 2013 to develop and market the premium product line.
Aftermath. The brand expanded into high-resolution players, headphones, in-ear monitors, network audio, amplifiers, speakers, and home-cinema products.
Recent events
- 2016AK70 portable player is introduced
Astell & Kern developed and released the AK70 as a new portable media-player model.
Product launch - 2015AK500N network audio system launches
Astell & Kern introduced a network audio system with internal solid-state storage and support for lossless streaming from computers and network-attached storage.
Product launch - 2015AK Jr broadens the portable-player range
The smaller AK Jr. was released as a more entry-level alternative within the company’s player portfolio.
Product launchPricing - 2014AK240 debuts at CES
The AK240 introduced Wi-Fi connectivity and an Android-based operating system to the brand’s player range.
Product launchProduct generation - 2014Astell & Kern expands into home audio products
The company presented products including a valve amplifier and a cylindrical speaker alongside its portable audio range.
Product launch - 2013iriver introduces the AK100 portable music player
iriver debuted the AK100 at CES, establishing the product platform that later became the basis for Astell & Kern.
Product launch - 2013Astell & Kern is established
iriver founded Astell & Kern in October as a dedicated premium audio brand.
Other
Sources
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