Cicognani Sexycomp 76 Compressor / Limiter

They say...

SEXYCOMP76 is a high quality photo-resistor compressor/limiter optimized for live use and studio recording with guitar, bass and acoustic string instruments. It offers two modes:

1. Compressor
2. Limiter

COMPRESSOR: The use of the compressor is often made necessary to guarantee a greater length of the note played, better depth of sound, to attenuate excess signal peaks thus ensuring a unique sound stroke. SEXYCOMP76 properly adjusted will increase the volume level (clean threshold) of your amply.

LIMITER: The limiter mode is much more intuitive and is born in order to establish a maximum signal level also reducing energetically the excesses.