DAC is the same AKM model for 3700, 4700 and 6700: the 4458VN. I think this is the same as Anthem. Except the lack of XLR outputs, the full pre amp mode offers you very competive products to associate with external amplifiers with voltage input in the range of 1.5 to 2V.Before I go look, are the DACs the same between the 3700 and the 4700?