The ratio SQ/Price is not linear. If your set up is around $100 when you hear a set up of $200 you could tell that it's sounds two times better but a $2,000 set up doesn't sounds two times better than a $1,000. When you're in cosumer grade audio products, it's a lot of things than can easily be improved with an obvious impact in SQ but when you're scaling to Audiophile/Reference SQ you start to look for exotic material and extreme solution to get a little improvement. I am positive that those improvements are real, I'm just saying that as the price increase there's less room for improvement in SQ.
Under economics it would be defined as the law of diminishing returns. haha
Just got mine pre-ordered really hope they don't disappoint me and for its price i'm kinda expecting a lot from it.