Better Dac than CAl Alpha for Sony 7000 dvd

I am actually looking for someone who has any experience with these 2 pieces together. Is there a better transport than the sony for the Alpha? If so, what did you purchase that was better. thanks
Just about every source I had sounded great through my Alpha. The sony is quite nice. Try tube rolling instead. Most CAL pieces come with crap chinese tubes. Get hold of some old mullard 12ax7s and see for your self.