Where is the weak chain in my system?

My current system includes ML 31.5 transport; Goldmund 21+ DAC with digital volume control; (no preamp); ARC VT100 MK3 amps; Voce Divina Tenore Speakers; Cardas power cords for transport and DAC; Cardas crosslink speaker cables. It is a living room system for 35ft by 15 ft. I like the sound of my system but could hope for more on warmth and smoothness as well as some more power??? What are your thoughts on which part of the chain is the next target for upgrade and any recommendation on equipments?