it all sounds good, but.....

So, I've been building up my system...(theta miles, art audio px25, cain-cain single horn bens). it sound great, but it doesnt sound real. every upgrade I've made makes small differences. the only time ive heard a dramatic difference is when an LP was playing.

i've heard plenty of sub $20k systems, but they dont sound real, unless an LP is playing. i really dont think its the amp or the speakers... Im thinking its the digital/redbook source.

are there any digital sources that sound real? or do I have to get into LPs?