Originally Posted by Kurt
I don't know the STX and it may very well be almost as good as the Stagedac. But your phones might be the weak Link in a Stagedac -> Concerto chain. Maybe you would hear bigger differences with more resolving cans. Can you borrow some? Or travel to a meet with your rig?
The Pro 900 are pretty good headphones... Probably on par with most of yours, minus the HD 800. So resolving is probably not the best word. Neutral is probably better, but both are great qualities.
At the end of the day there is only so good music can get , as it is limited by the recording. So it is very possible the STX and Stagedac, and many other sources for that matter are much more similar than they are different... otherwise there would be issues in their design.
Plus, no one said it was as good, just very close, and more competitive in terms of cost.
Remember, we are spending tons of money for these 1,2,3,4,5% changes at most.
As a DAC the STX is probably not as good as it does not have jitter reduction and such, but as a source it is probably close.