EQ
The EQ (equalizer, often called “tone stack”) is an integral part of the amplifier. It features four controls for the different frequency bands: “Bass”, “Middle”, “Treble” and “Presence”. These controls are always present in Browse and Performance Mode.
Basically, the equalizer in the PROFILER is a recreation of a generic, passive tone stack, but it is designed to have more impact on the frequency bands. When all soft knobs are in the middle position, it does not change the sound, so what you hear is the unaltered sound of the PROFILE.
An additional setting can be found on the last page of the amplifier module: A soft button allows you to set the position of the equalizer to either “Post” (after) or “Pre” (before) the amp module. The EQ has a different impact on the sound of a distorting amp, depending on its position. In tube amps, it is positioned between the preamp and the power amp. Most modern guitar amps with a master volume control perform the distortion in the preamp; thus, the equalizer is positioned after the distorting circuit. Classic amps without master volume control (such as Vox® AC-30), produce the distortion in their power amp. In this case, the equalizer is positioned before the distorting circuit. However, setting the position according to the original amp is not mandatory, since the authentic sound of the reference amp has already been captured, and therefore includes the original equalizer setting. Users of classical PROFILER models can use the EQ button as a shortcut to the EQ settings in the amplifier module.
✓ A dedicated tutorial video explaining the EQ in the stack section can be found at: http://www.kemper-amps.com/video