Starting in the late 70's, mostly Japanese manufacturers started to develop Linear Tracing automatic TTs. Linear Tracing arms have many advantages over radial arms. The most important being that the inevital tracking errors associated with traditional arms can almost be eliminated. Consequently, Linear Tracing arms are the only arms capable to track the record groves in the same fashion as when the master record was cut in the first place.Tangential arms can also be made much shorter and thereby lighter and also stiffer. The main challenge with tangential arms are the complicated electronics and mechanics necessary to move the arm correctly. By the early 80s, the development of VLSI and IC's meant that advanced electronics now took much less space and could also be developed to a lower cost. The Japanese companies took full advantage of this fact and developed automation in vinyl playing to a new level with Fully Programmable Linear Tracers in true 80's Sci-Fi spirit!
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