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  2. Gainclone - Wikipedia

    en.wikipedia.org/wiki/Gainclone

    Gainclone. Gainclone or chipamp is a type of audio amplifier made by do-it-yourselfers, or individuals interested in DIY audio. It is a design based on high-power integrated circuits, particularly the National Semiconductor Overture series. The Gainclone is probably the most commonly built and well-known amplifier project amongst hobbyists.

  3. DIY audio - Wikipedia

    en.wikipedia.org/wiki/DIY_audio

    As an example, a well known clone includes amplifiers using high power integrated circuits, such as the National Semiconductor LM3875 and LM3886. The use of a high power IC as part of a quality audio amplifier was popularized by the 47 Labs Gaincard amplifier, and thus the DIY amplifiers using power ICs are often called chipamps or Gainclones.

  4. Heathkit - Wikipedia

    en.wikipedia.org/wiki/Heathkit

    Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $335 in 2023) for the DIY kit. [ 1 ] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company .

  5. LM386 - Wikipedia

    en.wikipedia.org/wiki/LM386

    LM386. The LM386 is an integrated circuit containing a low-voltage audio power amplifier. [1] It is suitable for battery-powered devices such as radios, guitar amplifiers, and hobby electronics projects. The IC consists of an 8-pin dual in-line package ( DIP-8) and can output 0.25 to 1 watts of power, depending on the model, using a 9-volt ...

  6. H. H. Scott, Inc. - Wikipedia

    en.wikipedia.org/wiki/H._H._Scott,_Inc.

    The company pioneered developments in noise suppression, tube output circuits, hifi mono and stereo amplifiers, tuners, FM multiplex, transistor receivers, FET RF sections, and integrated circuit IF sections. Scott's Instrument Division manufactured precision sound measuring and analysis instrumentation for laboratory use.

  7. Class-D amplifier - Wikipedia

    en.wikipedia.org/wiki/Class-D_amplifier

    The first Class-D amplifier was invented by British scientist Alec Reeves in the 1950s and was first called by that name in 1955. The first commercial product was a kit module called the X-10 released by Sinclair Radionics in 1964. However, it had an output power of only 2.5 watts. The Sinclair X-20 in 1966 produced 20 watts but suffered from ...

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