The difference between correctly implemented chips is so subtle, its hard to really tell the difference. I have an low end wolfson chip based DAC (nfb 12) and a mid priced R2R (audio gd ref 10.32) and the difference is there but its minor. Yes the 10.32 is better but so is the amping on that dac. Is the difference worth the 1500 dollar difference probably not but we all want to believe there is something better. I am at my end game now after upgrading to HD800 (balanced) with ref 10.32. I really dont think spending more money will/can make a hearable difference.