compressor
While the audio path is a very clean, low distortion design, the P3500 is capable of a wide
range of sonic manipulation from crystal clear low ratio compression that preserves the
nuances of musical performance, to extreme overcompression. The P3500 is capable of
over 50dB of gain reduction, while remaining musical sounding.
The P3500 is equipped with a powerful new feature, the ability to freely mix compressor
time constants to create unusual compression types such as RMS + Peak, AR + NL or
any other combination using the 4 time constant pushbuttons.
https://reverb.com/p/foote-control-systems-p3500-500-series-compressor