"My HT Sony upstairs has it."
Your Sony has nothing remotely close to MultEQ, and busting out the tape measure will only get you 25% of the way to what MultEQ does. No amount of user fiddling will give you the software room correction that you'll get out of any flavor of MultEQ (not to be mistaken with the basic 2EQ version!).
Trust me, good room correction is the most important thing to happen to receivers since we got Dolby Digital decoders in them. Your Sony has auto-setup, which is a partial step on the way to room correction.