With out importance level in that process and with out know almost nothing about I list some limitations on that normal process ( not " audiophile " but normal. ):Of the things listed most have nothing to do with the LP except the mastering, plating and the resulting quality of the pressings. IME the quality of mastering means a lot more about the pressing quality than the work of the actual plant.
- quality level of microphone.
- microphones place during recording.
- use of limiters, equalizers, reververation or other electronics artefacts.
- quality level of monitoring system.
- bias of the recording engineers or recording producer to some kind of sounds.
- edition work.
-dubbing.
-mastering and platting.
-quality level of all the electronics surrounded the recordings: microphone amps, cables, connectors, amps and preamps, overall recording consoles, etc, etc.
-quality of pressing.
-and many other " characteristics " where you can put some light to ignorants as me trying to learn.
We did one job where the customer was doing the pressing at United, which is not known for pressing quality. I knew some people that got a project done there and the finished LP seemed kind of .... compressed. But in our case when we got the finished pressings back they sounded fine. We didn't add any compression to the recording- usually with LP there's no point to it.