Logic tells me that the music player should decode the digital data and send it as a raw digital PCM stream to the DAC. Unless I am using an EQ or DSP plugin of some kind, should not all software sound the same to my ears?
If in doubt, you can easily record whatever a WASAPI application hands off to the DAC and check that output are as expected. Most programs will handle audio correctly, but no harm in double checking.
They won't believe you even if you prove it's bit perfect, but at least you'll know they are wrong :-)You do "need" to do it because you don't know the playback is bit perfect unless you check. Forgotten plug-ins, volume controls etc.That's said, the most common cause for reported audible differences between things that look different is that they look different, and humans use all their senses to judge things :-)Cheers,David.
The only thing that annoys me that these kinds of posts get people to needlessly waste money in pursuit of better sound quality.
I wonder if this has anything to do with logic.The bits are a conceptual thing.The sound will be the same if the same electrical signal is send to the DACThis is a nice example of fully identical bits but they measure different.RMAA test using the PSUSame test signaal (same bits) but this time running on battery power