Sabai... admittedly, I'm not much for audiophile verbal expression so my apologies if it comes off as confusing. I guess I was just trying to say that I was able to notice improvements as soon as I began to listen to the series 2 but as a whole, I don't think they are crazy dramatic...just better. These things are so very subjective, it's hard to illustrate on a forum. I love the new dac and I am glad that I made the change, that's about the best endorsement I can give. On the other hand, I still feel as if the series 1 is among the best out there and gets you most of the way there. How to measure the difference between is pretty hard to do.