The Presonus Studio Channel is a channel strip that features a tube preamp, a VCA compressor, and a 3-band parametric EQ. The tube preamp section features two knobs: Gain and Tube Drive. This allows you to adjust the amount of signal that hits the tube circuitry, opening up a wide range of sonic options. The VCA compressor section is well-suited to help all different kinds of audio sit nicely in a mix, whether it's percussion with fast transients, or smooth and silky vocals. The parametric EQ features a custom amplifier with a gain control on each of the 3 bands, with a variable Q knob on the mid frequency.