Just a note on the tube preamp option. I have a DNA-0.5 Deluxe and recently bought a used BAT VK-3i to replace my previous ss preamp. The VK-3i is a wonderful piece of gear but the combination produces hiss that is clearly audible from my listening position. Thinking it might need to be retubed, I spoke with Kevin at Upscale Audio and he seemed to think the problem is that the amp is too sensitive. Victor at BAT also thought that might be the problem. Sure enough, I was able to hook up another amp and the hiss decreased dramatically. Now I have a dilemma since I really like both pieces. What I'd really like is a VK-200 but that's another story. I assume that the DNA's high sensitivity is due to Steve's preference for passive preamps but I don't know that for sure.
Good luck.
Dick
Good luck.
Dick