Shadorne....The number of D/A states is fixed for a device of a given number of bits. The voltage step from one state to the next (quantization) depends on how the D/A is designed. That said, the numbers you quote are about right for D/As used in audio applications. And with 0.03 mv for a CD and 0.2 microvolt for a DVDA one would think that either would follow a line level analog waveform darned well. However, don't forget that gain follows the D/A, and by driving the input harder the gain following can be less, so that one bit AT THE SPEAKER is a smaller voltage.
I notice much greater improvement by this adjustment of gains than with ceramic outlet covers :-)
I notice much greater improvement by this adjustment of gains than with ceramic outlet covers :-)