description Teletronix LA-2A Overview
The Teletronix LA-2A is an optical audio compressor introduced in 1965. It reduces gain by using a luminescent panel and a light-dependent resistor, coupled with tube amplification circuitry, producing smooth compression characteristics. Engineers have used it extensively on vocals, bass guitar, and other studio sources. It remains manufactured in various reissue forms and is frequently cited in technical literature on analog signal processing.
help Teletronix LA-2A FAQ
How does the Teletronix LA-2A compressor work?
The Teletronix LA-2A uses an electro-luminescent panel and a photoresistor to achieve smooth, transparent gain reduction. This optical design means the compression is highly musical and program-dependent, reacting differently to various sources without harsh artifacts.
When was the LA-2A originally introduced?
The Teletronix LA-2A was originally introduced in 1965 by Jim Lawrence. The original company was later acquired by Bill Putnam's Universal Audio, who continues to manufacture highly sought-after hardware reissues of the unit today.
What makes the LA-2A so popular for vocal recording?
Audio engineers prize the LA-2A for its incredibly smooth, warm compression, largely driven by its tube circuitry. It effortlessly glues a vocal performance together, taming peaks without sounding aggressive or causing the vocal to pump.
What does the 'Peak Reduction' knob do on an LA-2A?
Unlike modern compressors with dedicated ratio and threshold controls, the LA-2A features a single 'Peak Reduction' knob that essentially controls the threshold. The user simply dials in the desired amount of gain reduction, making it extremely fast and intuitive to use.
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