I have owned CD players that upsample. I have never owned a DAC that had the capability so I am going to ask a foolish question. The Benchmark DAC1 has upsampling ability. How does this work. Does it simply recognize an upsampled data stream from a CD player or source, or does it take a signal from a CD player and then do the upsampling. I ask because I hope to aquire the DAC1 and am curious about which inexpensive CD player to use with it, one that upsamples or a cheaper one that does not but that I already own???