Originally Posted by miyinan
@project86: What was the sample rate of the music file you used to test the D100? Based on pictures you posted, it seems that you used 96khz for USB input. Did you try any 44.1khz with USB input? When using USB, did you set the resample rate to 96khz in foobar all music files (including 44.1 ones)?
Sorry I have a lot of questions. I was about to pull triger on he D100 but got a little confused with the foobar setting with USB input. By the way, your review was great and thorough and I enjoyed reading it.
That picture I posted was mainly to show how the device appears in Foobar as "Yulong Audio". I just happened to be playing a 96kHz file at the time.... but as we know, most music is basic CD quality, and I play a ton of 44.1kHz tracks over USB. The result is very good. Perhaps just a small step down from some of the best I've ever heard over USB, such as the Wavelenth Audio Crimson.
I do not set a resample rate as I prefer to keep the computer from messing with the tracks, unless I need to downconvert a file that is higher than 96kHz. I have no idea why the designer would suggest that 44.1 be upsampled by the PC. I would think the dedicated ASRC hardware in the D100 could handle that process better than the software method that Foobar uses. Differences between sample rates are not night and day, but I am pretty sure I have heard a difference between native output and Foobar upsampled output. Not a huge difference, but enough to convince me to keep things in their native rate, and let the D100 do the heavy lifting in that area.