CLA-2A Compressor / Limiter.

The CLA-2A models the electro-optical valve compressor that has sat on vocals, bass and guitars for over half a century, taken from Chris Lord-Alge's own hardware unit. Two controls do almost everything, though the behaviour behind them is not simple, since optical gain reduction depends on how the circuit reacts to the material passing through it. It stays natural under heavy compression, the valve stage adds harmonic saturation, and a mix control handles parallel compression.