If I am not mistaken, it will be controlled by your Pre-amp. Try to search on the net. If i'm also not mistaken, pre amp output must be connected to an amp. However, some Graphic EQ might have high out for speakers. Normally the parametric equalizer only has RCA outputs.
If you wanna ask what's a parametric and graphic equalizer, here's the answer
Parametric vs. Graphic Equalizers
A graphic equalizer has usually fixed frequency and Q value. The layout of a graphic equalizer is the typical sliding controls arranged by frequency. The advantage of a graphic equalizer is that in the way it is laid out, it is easy to see what frequency is being boosted or cut and any person without much experience can adjust it. Since a graphic EQ has fixed frequencies and Q, it has limitations on what it can control. A parametric equalizer consists of knobs that are turned to desired levels, have adjustable frequencies and (usually) Q. The advantage of parametric equalizers is a much greater control, since frequencies and Q values can be adjusted. On the other hand, a parametric equalizer is much harder to adjust than a graphic EQ, requiring an experienced person and measuring equipment.
Correct me if I'm wrong though.
