I'm currently using a Bryston BCD-1 cd player, Esoteric AI-10 integrated amp, and PMC FB1i speakers. The speaker cables are Morrow Audio SP1's, interconnects are Morrow Audio MA2 xlr's and power cables are Shunyata Venoms. No power/line conditioner. I have a small to mid size room, 16x13x8, and it's fully furnished and carpeted with an open staircase. What would you upgrade in this system?