Read a thread here recently on Audio Note going filterless in their Dacs. You may want to do a search and read more about the filterless approach.
Scott nixon dac....
I am new to the dac concept...and in this case "filterless" theory(which intrigues the hell out of me)...how would this mate with an intergrated amp? And what about "phase" concerns(which I gathered from the Nixon website)...also...any negatives about this product?