Question: Astell&Kern, is a South Korean consumer electronics company founded in October 2013, and is wholly owned by Iriver, the company manufactures media players, CD players, headphones, and which type, that refers to home entertainment audio-visual systems that seek to reproduce a movie theater experience and mood using consumer electronics-grade video and audio equipment that is set up in a room or backyard of a private home?

full_context: Document 1: Home cinema: Home cinema, also called home theater or home theatre, refers to home entertainment audio-visual systems that seek to reproduce a movie theater experience and mood using consumer electronics-grade video and audio equipment that is set up in a room or backyard of a private home. In the 1980s, home cinemas typically consisted of a movie pre-recorded on a LaserDisc or VHS tape; a LaserDisc or VHS player; and a heavy, bulky large-screen cathode ray tube TV set. In the 2000s, technological innovations in sound systems, video player equipment and TV screens and video projectors have changed the equipment used in home theatre set-ups and enabled home users to experience a higher-resolution screen image, improved sound quality and components that offer users more options (e.g., many of the more expensive Blu-ray players in 2016 can also "stream" movies and TV shows over the Internet using subscription services such as Netflix). The development of Internet-based subscription services means that 2016-era home theatre users do not have to commute to a video rental store as was common in the 1980s and 1990s (nevertheless, some movie enthusiasts buy DVD or Blu-ray discs of their favourite content).
Document 2: Astell&amp;Kern: Astell&Kern (stylized as Astell Kern) is a South Korean consumer electronics company founded in October 2013, and is wholly owned by Iriver. The company manufactures media players, CD players, headphones, and home theater products.
Document 3: JVC Kenwood: JVCKenwood Corp. (Stylized in all-caps) (JVCケンウッド) is a multinational electronics company headquartered in Yokohama, Japan. It was formed from the merger of Victor Company of Japan, Ltd and Kenwood Corporation on October 1, 2008. Upon creation, Haruo Kawahara of Kenwood was the holding company's chairman, while JVC President Kunihiko Sato was the company's president. JVCKENWOOD Corporation focuses on car and home electronics, wireless systems for the worldwide consumer electronics market, professional broadcast, CCTV and digital and analogue two way radio equipment and systems.
Document 4: Consumer electronics: Consumer electronics or home electronics are electronic (analog or digital) equipments intended for everyday use, typically in private homes. Consumer electronics include devices used for entertainment (flatscreen TVs, DVD players, video games, remote control cars, etc.), communications (telephones, cell phones, e-mail-capable laptops, etc.), and home-office activities (e.g., desktop computers, printers, paper shredders, etc.). In British English, they are often called brown goods by producers and sellers, to distinguish them from "white goods" such as washing machines and refrigerators. In the 2010s, this distinction is not always present in large big box consumer electronics stores, such as Best Buy, which sell both entertainment, communications, and home office devices and kitchen appliances such as refrigerators. Consumer electronics stores differ from professional audio stores in that the former sells consumer-grade electronics for private use, whereas the latter sells professional-grade electronics designed for use by audio engineers and audio technicians.
Document 5: Revel Audio: Revel is an American manufacturer and distributor of high-end luxury audio loudspeakers. It is owned by Harman International Industries. The company is based in Stamford, Connecticut, United States.
Document 6: Netflix: Netflix is an American entertainment company founded by Reed Hastings and Marc Randolph on August 29, 1997, in Scotts Valley, California. It specializes in and provides streaming media and video-on-demand online and DVD by mail. In 2013, Netflix expanded into film and television production, as well as online distribution. As of 2017, the company has its headquarters in Los Gatos, California.
Document 7: Jensen Electronics: Jensen is a consumer electronics brand with a history that dates back to 1915 with Peter L. Jensen's invention of the first loudspeaker. Over the years the Jensen family of brands has grown to include Jensen, Advent, Acoustic Research (AR), Phase Linear and NHT Loudspeakers (Now Hear This) in the United States and Magnat and Macaudio in Germany. In 2004, Audiovox Corporation added the Jensen portfolio of brands to their mobile and consumer electronics lines. In 2015, Dual Electronics Corporation (Namsung America) acquired Jensen, however Audiovox maintains its selection of Advent-branded car audio/navigation head units from its line.
Document 8: LaserDisc: LaserDisc (abbreviated as LD) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision in North America in 1978. Although the format was capable of offering higher-quality video and audio than its consumer rivals, VHS and Betamax videotape, LaserDisc never managed to gain widespread use in North America, largely due to high costs for the players and video titles themselves and the inability to record TV programs. It was not a popular format in Europe and Australia when first released but eventually did gain traction in these regions to become popular in the 1990s. By contrast, the format was much more popular in Japan and in the more affluent regions of Southeast Asia, such as Hong Kong, Singapore and Malaysia, and was the prevalent rental video medium in Hong Kong during the 1990s. Its superior video and audio quality made it a popular choice among videophiles and film enthusiasts during its lifespan. The technologies and concepts behind LaserDisc were the foundation for later optical disc formats including Compact Disc (CD), DVD and Blu-ray (BD).
Document 9: SK Planet: SK Planet Co., Ltd. (Hangul: SK 플래닛 or 에스케이 플래닛), a subsidiary of SK Telecom, was established on and is an internet platform development company located in Pangyo, South Korea’s silicon valley with operations in 8 countries. SK Planet was spun off from SK Telecom to focus on online services and has since evolved to focus on three core business services: e-Commerce, Online-to-Offline services, and digital marketing. Its aim is to establish a seamless commerce ecosystem by combining its commerce technology platforms and its marketing capabilities in order to deliver an integrated and personalized commerce experience to its consumers and business partners.
Document 10: Samsung Electronics: Samsung Electronics Co., Ltd. (Korean: 삼성전자; Hanja: 三星電子 (Literally "tristar electronics")) is a South Korean multinational electronics company headquartered in Suwon, South Korea. Through extremely complicated ownership structure with some circular ownership, it is the flagship company of the Samsung Group, accounting for 70% of the group's revenue in 2012. It is the world's second largest information technology company by revenue after Apple. Samsung Electronics has assembly plants and sales networks in 80 countries and employs around 370,000 people. Since 2012, Kwon Oh-hyun has served as the company's CEO.
Document 11: Video tape recorder: A video tape recorder (VTR) is a tape recorder designed to record and playback video and audio material on magnetic tape. The early VTRs were reel to reel devices which recorded on individual reels of 2 inch (5.08 cm) wide magnetic tape. They were used in television studios, serving as a replacement for motion picture film stock and making recording for television applications cheaper and quicker. Beginning in 1963, videotape machines made instant replay during televised sporting events possible. Improved formats, in which the tape was contained inside a videocassette, were introduced around 1969; the machines which play them are called videocassette recorders. Agreement by Japanese manufacturers on a common standard recording format, so cassettes recorded on one manufacturer's machine would play on another's, made a consumer market possible, and the first consumer videocassette recorder was introduced by Sony in 1971.
Document 12: Digital media player: Digital media players (DMP) are home entertainment consumer electronics devices first introduced in 2000 that can connect to a home network to stream digital media (such as digital music, digital photos, or digital video). They should not be confused with portable media players (also known as mobile media players), which are portable consumer electronics devices capable of storing and playing digital media such as audio, images, and video files. Digital media players can stream files from a personal computer and network-attached storage or from another networked media server to play back the media on a television or video projector display for home cinema. Most digital media players utilize a 10-foot user interface, and many are navigated via a remote control.
Document 13: LG Electronics: LG Electronics Inc. ("Lucky Goldstar") (Korean: LG전자 ) is a South Korean multinational electronics company headquartered in Yeouido-dong, Seoul, South Korea, and is part of the LG Group, employing 82,000 people working in 119 local subsidiaries worldwide. With 2014 global sales of USD 55.91 billion (KRW 59.04 trillion), LG comprises four business units: Home Entertainment, Mobile Communications, Home Appliance & Air Solution, and Vehicle Components, with Starion India as its main production vendor for refrigeration and washing machines in the Indian sub-continent. The CEO of LG Electronics is Bon-joon Koo, who assumed the role of vice chairman of LG Electronics on 1 October 2010.
Document 14: CD player: A CD player is an electronic device that plays audio compact discs, which are a digital optical disc data storage format. CD players were first sold to consumers in 1982. CDs typically contain recordings of audio material such as music. CD players are often a part of home stereo systems, car audio systems, and personal computers. With the exception of CD boomboxes, most CD players do not produce sound by themselves. Most CD players only produce an output signal via a headphone jack and/or RCA jacks. To listen to music using a CD player with a headphone output jack, the user plugs headphones or earphones into the headphone jack. To use a CD player in a home stereo system, the user connects an RCA cable to the RCA jacks or other outputs and connects it to a hi-fi (or other amplifier) and loudspeakers for listening to music. They are also manufactured as portable devices, which are battery powered and typically used with headphones.
Document 15: Samick: Samick Musical Instruments Co., Ltd. (Hangul: 삼익악기, also known as Samick) is a South Korean musical instrument manufacturer. Founded 1958, it is one of the world's largest musical instrument manufacturers and an owner of shares in several musical instrument manufacturing companies.
ground_truth: home theater