The properties of the T4 give the LA-2A its unique character by making it an entirely program-dependent design. It uses an electroluminescent panel together with a cadmium-sulfide light-dependent resistor (which in the LA-2A's own terminology is called the T4 cell) to provide gain reduction.
The LA-2A is a hand-wired, tube-based compressor. The LA-2A was inducted into the TECnology Hall of Fame in 2004.
Īfter Universal Audio was re-established in 1999, the company re-issued an updated version of the LA-2A. Three versions of the LA-2A were made until 1969. In 1965, Lawrence sold Teletronix to Babcock Electronics of Costa Mesa, California, and in 1967 Bill Putnam's company Studio Electronics (eventually renamed UREI), acquired Babcock's broadcast division, including the Teletronix brand. The LA-2A had evolved from Lawrence's first leveling amplifier, the LA-1, which was favored by Gene Autry, and its successor, the LA-2, which had been adopted by CBS and RCA. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. The LA-2A Leveling Amplifier is an audio compressor produced by Teletronix Engineering Company from 1965 until 1969, and reissued in 2000 by Universal Audio. Audio compressor Teletronix LA-2A Leveling Amplifiers
