I have just picked up an old Behringer Ultra Q PEQ2000 EQ MONO. I am wanting to connect this to my interface which is ESU1808. The Behringer only has one IN and one OUT on back panel obviously since its MONO but the ESU1808 has 6 INS (numbered 1 - 6) and 8 OUTS (numbered 9 - 16) on back panel. My problem is which of the INS/OUTS on back panel of ESU do I actually connect the TRS cables from the Behringer EQ??