Did anyone check out this interview with producer Greg Fidelman? It's long (over an hour) but it's a great listen if you are at all interested in the recording process, gear they used, etc... in the studio for this album.
https://soundcloud.com/soundworkscollection/producer-greg-fidelman-metallicas-hardwiredto-self-destructCouple really interesting takeaways:
- They didn't track to a click, Lars would sometimes hear the click before they started tracking for reference or through an intro, but then they would shut it off and just go by feel.
- They used mostly the raw drum sound from the room with a small amount of samples layered on top.
- He goes into pretty good detail on the signal chain for certain drum mics, guitar signal paths, bass signal paths.
- Some of the stuff you hear on the album is one-take stuff they recorded on the floor (the drum track for Now That We're Dead).