It's 160kbit/s for popularity>0 and 75kbit/s for popularity=0. I'm surprised Anna's Archive went for this given that these are not archival quality bitrates. It appears they did this because they found a way, rather than seeking to create a library of music.
my comparison was with source catalog in spotify compared to the private tracker. spotify is working on the high fidelity mode, but so far it is not rolled out worldwide.
i completely understand the archive's decision on applying their own compression.
