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Phase Linear 700 Amplifier, Phase Linear 350 Amplifier, C4000 Preamp Phase Linear was an audio equipment manufacturer founded by Bob Carver and Steve Johnston in 1970. While primarily known as a power amplifier company it also produced several innovative preamplifiers, tuners and the Andromeda loudspeaker.
The first practical prominent device that could amplify was the triode vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers around 1912. Vacuum tubes were used in almost all amplifiers until the 1960s–1970s when transistors replaced them. Today, most amplifiers use transistors, but vacuum tubes continue to be used ...
The company was founded in the late 1970s by Jean-Pierre (John) Prideaux to build power amplifiers for the tour sound industry. The first amplifier, the P3500, delivered 475 watts-per-channel in a chassis that occupied a two-rack space at a time when competitors were offering 400 watts in a four-rack space.
By 1910 he developed this into the first real tube amplifier, by creating a triode. His invention of the triode is almost simultaneously created by the American Lee de Forest . Max Dieckmann and Gustav Glage use the Braun tube for playback of 20-line black-and-white images.
If hot-rodding Fenders was the first breakthrough, the second was developing an extra gain stage for the guitar input. Smith was building a preamplifier for Lee Michaels, who needed a pre-amp to drive his new Crown DC-300 power amplifiers. Smith added an extra tube gain stage to the preamp, with three variable gain controls at different points ...
Certain elements of the Blackface cosmetics were reintroduced in the mid-1970s on a series of amplifiers designed by Ed Jahns. The first amplifiers in this new line included the infamous 180W 'Super Twin' and 'Super Twin Reverb' amplifiers which featured active tone controls and a built-in distortion circuit that blended between clean and ...
Fender did not like the corporate name, so it changed first to Musitek, Inc., and in January 1974 the final name, Music Man, appeared. In 1974, the company started producing its first product, an amplifier designed by Leo Fender and Tom Walker called the "Sixty Five," a hybrid of tube and solid-state technology.
During the same era (late 1970s) PS Audio introduced its first power amplifier, the Model One, a solid state design producing 70 watts per channel into 8 Ohms and 140 watts per channel into 4 Ohms. The design was a classic AB amplifier design featuring the company's first full 19" chassis design, large power supply, low feedback and minimalist ...