Ed:
The day I delivered the amp to you, I got home that night and wired a different pre in. WHAT a difference! The ALD-1 made a huge difference in quietness and purity of sound. That pre is pretty impressive - I am glad your Dad is enjoying it. It sure spoiled me.
I may hold on to the DNA-1 until you can buy it - I am in no hurry to get cash for it and it would be great to sell it to a fellow audio geek.
I will keep it in the list for a few more days then remove it.
Pepe