Can you provide links for these studies please? 2017-01-09 23:31:02 When reading other discussions around the web, people have mentioned the following tests/studies, but I haven't been able to find them (and the discussions where I had seen them mentioned where often old, so the participants didn't respond). I also looked in the sticky topic with links to blind tests as well as the sticky topic with FAQs, but with no luck. Many of the links in those two topics are also more than ten years old and have since been removed.So, here are my requests:* Master tape vs. CD and/or hi-res (failure/success - I assume failure. I know of Bruce Botnik doing such a blind test (at 24/192) with other people present, and I know of mastering engineer Dave Collins doing it as well (at 24/88.2). I've also heard of someone in the 90s who offered a million dollars if someone could tell a master tape apart from a CD (Michael Fremer should be a millionare by now ), but if you know of any "proper" studies, then please share a link )* Master tape vs. vinyl (probably where vinylphiles preferred the vinyl transfer and/or succesful/unsuccesful blind tests between the two) - less important sub-request: vinyl vs. digital recording of the LP. I know of two good cases: One is the Spanish website Matrix Hi-fi, which actually also exists in English (the page with links to blind tests says Spanish only) as well as the one from Audio Asylum conducted by Mike Lavigne and John Elison. The latter was a blind test, but I don't know if everything (e.g. volume level) was controlled. The former didn't say if it was blind, but everybody agreed that the two sounded the same.)* Null-test between digital audio with and "without" ringing (I found this on Archimago's Musings. Someone said this in a comment: "There is also little evidence of this ringing being present in the audio signal with null tests using actual music signals. The only eveidence you will find is a small 'peak' at the filter's cut-off frequency in the 'difference file' in this case. Any (small) differences in the audible band will be caused by phase or amplitude (FR) differences or distortion. Small FR and phase differences are not audible BUT very measurable by the way and caused by the filter or coupling capacitors in the chain." According to Archimago's images, a higher sample rate removes ringing in the audible spectrum, although Archimago himself seems to downplay any audible effects of this ringing)I might ask for a few more studies, but this was all I could think of now. Thanks for your help :-).