Hahahaha, of course not! Everyone on head-fi knows, the real solution is cables! Use the right 99.999999999999999% pure ultra-conducive unobtanium cables and you can make your Portapros morph into your own personal string quartet if you wanted.
Oh, and don't forget to go balanced!
But one serious question. Is there really an audible difference between balanced and unbalanced by using the same amp like Bryston BHA-1 ?