If you're trying to put an equaliser in between a source and an preamp or integrated amp, the amp needs to have tape OUT or dubbing OUT connections. This will go to the eq's IN. Then eq OUTs should be connected to the tape or dubbing IN on the amp. When playing any source you set the amp's source selector to tape or dubbing IN and now what you are hearing is coming through the equaliser.
Answers & Comments
If you're trying to put an equaliser in between a source and an preamp or integrated amp, the amp needs to have tape OUT or dubbing OUT connections. This will go to the eq's IN. Then eq OUTs should be connected to the tape or dubbing IN on the amp. When playing any source you set the amp's source selector to tape or dubbing IN and now what you are hearing is coming through the equaliser.