thank you. That helps greatly. So for my Parasound AMPS it would drop from around 101db range at 1v to 1.2v ish AKM DAC 3700 to roughly 93-94db ish for the 4800 TI DAC. I had asked a senior technical support rep from Denon(who I had been corresponding with on a different issue) about the lower SINAD And he said.\n\nThe X4800H will use the same DACs as the X3800H. Overall performance is not measured by the DAC alone, but rather the combined output of many components. We've logged many hours of listening tests and received Sound Master approval which gives us the utmost confidence that the X4800H will deliver the premium sound that our customer base expects from Denon.\n\nAlso said this about theAKM TO TI DAC change:\n\nThe SINAD is the signal to noise and distortion ratio. In this case, it defines the quality of the signal through the digital to analog conversion process. This alone does not signify the quality of the audio from the output of the AVR in totally. There are other components that are tuned to optimize what you hear from the unit. When the DACs were switched from AKM to TI, our Engineering team fine tuned these other components to ensure that the AVR's output is at an optimum quality.