Is there such a thing as audiophile parametric eq?

My listening room is of awful dimensions (close to 1 x 2 x 4) and I've used treatments and bass traps to get the imaging and bass response to be very good. Yet there are some frequencies especially in the mid-bass that are very loud compared to everything else. I was considering buying a Behringer DEQ2496 after hearing rave reviews of what it can do in a home listening environment. Then I found out that the SPDIF I/O is optical and that threw a wrench into that plan. What I need is either a very good digital eq that uses RCA SPDIF or a very good analog PEQ. Any suggestions?