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Practically every 20th century hi-fi preamplifier, integrated amplifier and receiver featured a built-in phono preamplifier with the RIAA characteristic. As more modern designs omitted the phonograph inputs, add-on phono preamplifiers with the RIAA equalization curve have become available.
An example of a typical high-end stereo preamplifier. A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker. [1]
Dynaco was an American hi-fi audio system manufacturer popular in the 1960s and 1970s for its wide range of affordable, yet high quality audio components. [1] Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, it's best known product was the ST-70 tube stereo amplifier.
In 1983, the first Vacuum Tube Logic (VTL) tube power amplifiers and preamplifiers went into full-fledged production in the UK for the European market. David, joined by his son Luke introduced the amplifiers to the US market at the 1986 Consumer Electronics Show , where the positive reception convinced them to expand their distribution to the US.
An integrated amplifier (pre/main amp) is an electronic device containing an audio preamplifier and power amplifier in one unit, as opposed to separating the two. [ 1 ] [ 2 ] Most modern audio amplifiers are integrated and have several inputs for devices such as CD players , DVD players , and auxiliary sources.
Most phonograph cartridges also have a low output level and require a preamp; typically, a home stereo integrated amplifier or receiver will have a special phono input. This input passes the signal through a phono preamp, which applies RIAA equalization to the signal as well as boosting it to line level.
Mullard Circuits for Audio Amplifiers is a famous book by the Technical Services Department of Mullard Ltd, a British valve manufacturing company. First published in 1959 and then reprinted several times it contained a number of designs by Mullard engineers for high quality audio amplifiers, which were to be used by amateur constructors as well as by manufacturers as the basis for many ...
Musical Fidelity is a British producer of high-end audio equipment focusing on streaming music players, and its core product range of amplifiers of various types (power, phono, headphone, integrated and pre-amplifiers). Other products have included headphones, Digital-Analog Converters (DACs), CD players, Bluetooth Receivers, ‘all-in-one ...
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