I've been using a Windows 10 laptop with MusicBee and FiiO's TubAudio ASIO driver to feed music to my FiiO X3ii (used as a DAC) and then line out from the X3 to a headphone amp. I've been concerned if I am truly getting a "bitperfect" output because the volume control in MusicBee still works and because windows is still trying to change the driver back to direct sound anytime I unplug the FiiO. To test this further I tried playing the same file from MusicBee and then again from the X3 directly (X3 as the source and the DAC). After going back and forth several times to get the volume matched it was very apparent to me that using the X3 as the source was much better sounding...which would mean no bitperfect playback was happening on my PC. Any suggestions as to what I can try to fix this? Should I maybe try Foobar? A different driver? Disable onboard sound completely? I would just use the X3 as the source all the time but I like being able to browse my music by looking at the album covers on a decent size screen. Any help would be much appreciated.