The original LA-3A Leveling Amplifier made its debut at the 1969 NY
AES show and marked the departure from the tube design of the
Teletronix LA-2A Leveling Amplifier. The LA-3A incorporated components
and design concepts from the Putnam-designed 1176LN Limiting Amplifier.
Immediately embraced as a studio workhorse and still widely used today,
the LA-3A remains a favorite of engineers and producers worldwide for
its unique compression characteristics and sonic signature.
Our UA Classics reissue of the LA-3A meticulously retains all the
internal and external qualities of the original: The same simple
control set, and the T4 electro-optical attenuator, which is the source
of the LA-3A’s program dependent compression. It also retains the 2RU
half-rack design, and comes complete with a single-unit rack
assembly--no additional kit is necessary. All the original rear panel
connections and controls are also maintained, while the commonly
performed “LA-3A gain mod” is added as an additional switch for maximum
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