Do you have enough power to drive the Epsilons with the Conrad 350? Infinities from that time (1985~1992) are famous for being very difficult to drive. Of course, their sound is fantastic in comparison to the really bad junk that they sell today.
bet your system sounds great! do you ever pull the speakers out from the wall? my ren 90's sound best about 4 foot out from the wall, 8 foot appart. always dreamed about the Infinity IRS Epsilon replacing my ren 90's, maybe some day.