I owned both the stock Bitstream and upgraded Bitstream. At first I was a little disappointed that the upgrade did not retain the original sound as much as I had liked. It did loose a little of the analog sound. That being said, the modified unit does have greater details in that it separates the instruments much better, produces a wider soundstage, overall more clarity. I especially noticed the clarity when a buddy of mine brought over a CD that sounded congested on the stock unit but the modified unit held it all together. Overall I find the Bitstream one of the best values for the money.
I hope this is helpful to some and Happy Listening.
I hope this is helpful to some and Happy Listening.