For the first set of files, I’ve applied a steep 96dB lowpass at 22500hz, the same way a reconstruction filter in a DAC would. I will be uploading a second set of test files with a high quality downsampling to 16/44.1 using a DAW with setting similar to what a mastering studio would use https://www.dropbox.com/s/6q6rnc02pi0sd2m/test%201.flac?dl=0 https://www.dropbox.com/s/bi4rrhq0e6rvxl9/test%202.flac?dl=0 Which is the lowpassed version and which is the original? Sent from my iPhone using Tapatalk