Soundhound,

What do you think of the following statement?

Sony docs say that the DACs employ a new "multilevel" design with multiple equal-value current sources that are summed to form the output. What makes for a lower error conversion is that the specific sources used for a particular summed output value are randomly selected at each iteration so that errors are not accumulated or repeated. These DACs are the same balanced-output, current-output DACs used in the SCD-C555ES (reviewed by Larry Greenhill in the October 2001 Stereophile), where three of these dual-channel chips serve the six channel outputs. The XA777ES uses six, with one entire dual DAC used per channel for the multichannel outputs and three dual DACs paralleled for each channel in stereo, to improve dynamic range.

Is this a marketing ploy, a valid parellel processing as claimed or just an overkill that produce no discernable difference to human ears?