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HEOS
is a Japanese electronics company dealing with audio equipment. The Denon brand came from a merger of Denki Onkyo (not to be confused with the other Onkyo) and others in 1939. It originally started as Nippon Chikuonki Shoukai in 1910 by Frederick Whitney Horn, an American entrepreneur. Denon produced the first cylinder audio media in Japan and players to play them. Decades later, Denon was involved in the early stages of development of digital audio technology, while specializing in the manufacture of high-fidelity professional and consumer audio equipment. Denon made Japan's first professional disc recorder and used it to record the Hirohito surrender broadcast. For many decades, Denon was a brand name of Nippon-Columbia, including the Nippon Columbia record label. In 2001, Denon was spun off as a separate company with 98% held by Ripplewood Holdings and 2% by Hitachi. In 2002, Denon merged with Marantz to form D&M Holdings. On March 1, 2017, Sound United LLC completed the ...
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DEI Holdings
DEI Holdings, Inc. is the US parent company of several brands of consumer audio electronics and vehicle security/remote start systems. Sound united is currently owned by Harman International. History The company that became DEI Holdings was founded by future US Representative Darrell Issa and his wife Kathy in 1982 as Directed Electronics, with Darrell Issa serving as the first CEO. In 2000, Darrell Issa was elected to the House of Representatives, and Jim Minarik replaced him as CEO. In 2004, the firm bought speaker company Definitive Technology; in 2006, it bought Polk Audio. In 2008, the companies adapted a holding company strategy, and their parent became DEI Holdings, Inc. In 2011, the company was bought by private equity firm Charlesbank Capital Partners. In April 2013, the company combined Polk, Definitive Technology and the Boom Movement brands into a new division called Sound United. In August 2016, Kevin Duffy was named the company's CEO, replacing retiring CEO J ...
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Samsung Electronics
Samsung Electronics Co., Ltd. (SEC; stylized as SΛMSUNG; ) is a South Korean multinational major appliance and consumer electronics corporation founded on 13 January 1969 and headquartered in Yeongtong District, Suwon, South Korea. It is currently the pinnacle of the Samsung ''chaebol'', accounting for 70% of the group's revenue in 2012, and has played a key role in the group's corporate governance due to cross ownership. It is majority-owned by foreign investors. Samsung Electronics is the world's List of largest technology companies by revenue, second-largest technology company by revenue, and its market capitalization stood at US$520.65 billion, the 12th largest in the world. It became the world's largest manufacturer of smartphones in 2024. Samsung is known most notably for its Samsung Galaxy brand consisting of phones such as its flagship Samsung Galaxy S series, Galaxy S series, popular midrange Samsung Galaxy A series, Galaxy A series as well as the premium Samsu ...
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Denon Dl103
Denon DL103 is an MC (moving coil) phono cartridge made by DENON company. The DL103 was designed for professional broadcast use in 1962 using the arms and turntables of the day. Production has continued uninterrupted since then. There are available different versions upgraded by other companies or individuals involved in DIY audio. Technical specification * Stylus: 16.5 μm diamond spherical tip * Cantilever: Aluminum * Frequency Response: 20 ~ 45 kHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base uni ... * Output: 0.3 mV at 50 mm/s * Output Impedance: 40 Ω * Load Impedance: 100 Ω * Channel Separation: Over 25 dB at 1 kHz * Compliance: 5 x 10–6 cm/dyne (100 Hz) * Tracking Force: 2.3 ~ 2.7g (± 0.3g) * Weight: 8.5 grams Despi ...
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Hifi Denon DRA1000
High fidelity (hi-fi or, rarely, HiFi) is the high-quality reproduction of sound. It is popular with audiophiles and home audio enthusiasts. Ideally, high-fidelity equipment has inaudible noise and distortion, and a flat (neutral, uncolored) frequency response within the human hearing range. High fidelity contrasts with the lower-quality "lo-fi" sound produced by inexpensive audio equipment, AM radio, or the inferior quality of sound reproduction that can be heard in recordings made until the late 1940s. History Bell Laboratories began experimenting with various recording techniques in the early 1930s. Performances by Leopold Stokowski and the Philadelphia Orchestra were recorded in 1931 and 1932 using telephone lines between the Academy of Music in Philadelphia and the Bell labs in New Jersey. Some multitrack recordings were made on optical sound film, which led to new advances used primarily by MGM (as early as 1937) and Twentieth Century Fox Film Corporation (as early as ...
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Gramophone Record
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph (or "gramophone", "turntable", or "record player"). Records have been produced in different formats with playing times ranging from a few minutes to around 30 minutes per side. For about half a century, the discs were commonly made from shellac and these records typically ran at a rotational speed of 78 rpm, giving it the nickname "78s" ("seventy-eights"). After the 1940s, "vinyl" records made from polyvinyl chloride (PVC) became standard replacing the old 78s and remain so to this day; they have since been produced in various sizes and speeds, most commonly 7-inch discs pla ...
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Subsidiary
A subsidiary, subsidiary company, or daughter company is a company (law), company completely or partially owned or controlled by another company, called the parent company or holding company, which has legal and financial control over the subsidiary company. Unlike regional branches or divisions, subsidiaries are considered to be distinct entities from their parent companies; they are required to follow the laws of where they are incorporated, and they maintain their own executive leadership. Two or more subsidiaries primarily controlled by same entity/group are considered to be sister companies of each other. Subsidiaries are a common feature of modern business, and most multinational corporations organize their operations via the creation and purchase of subsidiary companies. Examples of holding companies are Berkshire Hathaway, Jefferies Financial Group, The Walt Disney Company, Warner Bros. Discovery, and Citigroup, which have subsidiaries involved in many different Industry (e ...
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Compact Cassette
The Compact Cassette, also commonly called a cassette tape, audio cassette, or simply tape or cassette, is an analog magnetic tape recording format for audio recording and playback. Invented by Lou Ottens and his team at the Dutch company Philips, the Compact Cassette was released in August 1963. Compact Cassettes come in two forms, either containing content as a prerecorded cassette (''Musicassette''), or as a fully recordable "blank" cassette. Both forms have two sides and are reversible by the user. Although other tape cassette formats have also existed—for example the Microcassette—the generic term ''cassette tape'' is normally used to refer to the Compact Cassette because of its ubiquity. From 1983 to 1991 the cassette tape was the most popular audio format for new music sales in the United States. Compact Cassettes contain two miniature spools, between which the magnetically coated, polyester-type plastic film (magnetic tape) is passed and wound—essentia ...
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