I don't like the sound of my system. Help please.

Thanks to all in advance for all the help.

ARC SP-14, ARC 150.2, Naim CD 3.5, also a Conrad Johnson PV-10, Vandersteen 2c Sig Mk II, REL Strata III

The sound is thin and voices sound strained. No depth or warmth.

I like to spend about $1200 give or take on any new components.

Suggestions?