The exciter adds brightness to the input signal. The exciter does this by splitting the input signal into two bands and then by adding slight amounts of distortion to the higher frequencies before merging the two bands back together again.
tone - Where in the frequency range the excitement will begin.
Power - How much of the input signal will be excited.
dry/wet - The balance between the excited signal and the non-excited signal.
If a sound is too dull or "dark", treat it with this device to add more brightness to it. The Tone knob controls the range of brightness, Power controls the intensity of the brightness and Dry/Wet controls how much of the effect is added to the original sound. Experiment with different sounds and you'll get it.
i really didnt understand this for a very long time, now i can replace this over the drive stomp box and add a bit of brightness to the high freq, instead of low and high which sounds soooo bad
should this go before or after eq? probably after?