Archimago wrote: 
> Yeah, I can certainly let me friends each try it out for a few days and
> develop some experience, make notes, and settle on specific passages to
> listen to before the blind-test-day! Of course, they will be using their
> own DACs first. This will also allow comments about perceived
> differences / improvements with different gear...

Hi Archimago,

Are all USB ports on all PCs identical?

Up to the invention of the REGEN I would have said yes.

Now we have to assume that all internal hubs found in computers,
keyboards, monitors can have an effect on the USB when connected to
audio USB devices.

So you need to ensure that your friends plug the REGEN into a
motherboard USB port. Are all motherboard's USB ports the same? Probably
not.

So, it is not valid to have your friends pre-test on their own PCs
because this can cause bias.

If pre-testing is really required, they should be using the identical
setup used in the test.

regards
Greg


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