The reviewer tried it in the tape monitor loop, unsuccessfully. Too little output, apparently. Yup. Seems to be only about 150 mV there in mine.
So, he puts it on his preamp out and cranks the volume to 2:00 as standard setting based upon clipping indicators and uses the amp volume controls to set the listening level.
Alas, no remote on the amp volume, and no remote on the EQ so he extends his cables to locate the EQ at his listening position to tweak from there. He ends up with different EQ curves for each of his favorite recordings. ACK!
I must say the two newer units (one inadvertent) are kinda interesting. Maybe time to hoof it down to the Pro Audio shop to find out more what's up:
http://www.behringer.com/DCX2496/index.cfm?lang=ENG
http://www.behringer.com/DEQ2496/index.cfm?lang=ENG