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Phase Linear 4000 Pre-Amplifiers

Phase Linear 4000 Pre-Amplifier

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Part Number Part Description PCB Number Type Known Models
Phase Linear 4000 Phase Linear 4000 Pre-Amplifier   Amplifiers Phase Linear

The 4000 Autocorrelation Preamplifier was a collaboration design by Bob Carver and Bill Skinner.

 It was designed to expand or uncompress the sonics of recorded material. In audio parlance,

it is called dynamic headroom. In the midst of all the knobs and toggles was the four channel balance joystick.

The 4000 had the capability of controlling up to six components: a tuner, two tape decks, two turntables and an auxilliary.

 It had three switched and three unswitched AC plugs. 

The 4000 was manufactured from 1973 to 1977. It retailed for $600 but the price rose ten percent in 1977. It is still highly sought after today.




  • Audio Brands Phase Linear

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