As audio enters the unit, it powers a light source; the brighter the light, the more the resistor reduces the gain.
If you open the CLA-2A and see only two knobs, do not panic. This is its greatest strength. cla-2a compressor limiter
Chris Lord-Alge added a high-frequency boost that kicks in only when compression occurs. As the compressor clamps down, it adds a subtle airy top end. This prevents the classic LA-2A from sounding "dark" or "muddy" on dense mixes. As audio enters the unit, it powers a
