For those of you that use the M-Audio USB Audiophile I have a question.
Unless you have a light on your DAC like me with my Lavry DA10, how do you know that you are listening to a non-up-sampled signal?
I have to keep tweaking the one I just got today to keep it locked onto 44.1 kHz. When I log out and log back in it appears to wants to settle on 48 kHz. So if I did not have my lock light I would never know unless I tested this each time.
Just a thought.
This may be one reason to use the converters that utilize the PCM2704 chip instead of some others that provide a flexibility that can't be positively controlled as the USB Audiophile. That is if you don't have some positive method to ensure that you don't have a fractional upsampling going on.