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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. It is simple to build and involves only a few readily accessible, inexpensive parts. As an amplifier it is highly regarded by many in the DIY community.
==Background==
In 1999, 47 Labs introduced the Gaincard amplifier. The Gaincard shook the audiophile community with its unconventional design. It had fewer parts, less capacitance and simpler construction than virtually anything preceding it, and relied for amplification on a chip, the National Semiconductor LM3875. These construction techniques went against the accepted wisdom of the time, which favored large power supplies and discrete component construction. This Gaincard was estimated to cost less than in parts, but it sold for with its small power supply. Controversy ensued after a number of positive reviews.〔(sakurasystems.com - 4704 PiTracer reviews )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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