It’s been four years since I wrote the first post in this thread. The basic info about file types still applies to BIAB 2021.

The reason for this thread is that each year at this time, when the new version is released, people may be considering purchasing or upgrading to the audiophile version. If so, I encourage you to go to the first post in the thread, page one, and read the first dozen or so posts.
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BIAB 2021 Win Audiophile & 2020 Mac UltraPak. Software: Studio One 5 Pro, Adobe Audition CC, Notion 6; Win 10 64 Pro. Hardware: custom i7 16 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam sub & monitors