W
WeissSound
Engineer
I don't have any in my library.
An unmixed track can range from sounding like total and complete trash to simply sounding a bit busy, in a bad way. It all depends on how everything is tracked and recorded.
Unless the recording engineer and producer really know their stuff. In which case a track can come in sounding pretty durn mixed.
An unmastered and mixed track sounds fine. It will be balanced and everything will have it's own space in the soundscape. In today's industry it would sound perhaps a bit duller and of course quieter.
Unless the client requests the mix be loud and bright. If the mix is how it needs to be a good mastering engineer won't change anything.
A mastered track sounds like the mixed track except it's usually brightened, the dynamic range is reduced (it's much louder usually), and any stray mix issues are sure to be fixed by either the mastering engineer or the quality control engineer.
Mix issues would be addressed by the mastering engineer in what is known as "pre-mastering". Other QC would include things like removing clicks and pops that were missed in the mix phase - a lot of times an assistant engineer gets that gig. But a mastered track only sounds brightened if the mastering engineer brightens it! "Mastering" doesn't do anything - mastering engineers do things.
On the sample level, things might be quite a bit different. Usually during the mixing and mastering process, everything is in 24 bit or higher resolution. Before the mastering job is finished, an engineer usually adds dither and shrinks the track resolution to 16 bit (in most cases). Assuming they are preparing the music for CD duplication. There's no bit rate for cassette or vinyl!
There we go.