When the first CD was made in 1982, it was made from the same masters as contemporary vinyl records.
Then, sometime in the 90s, the “Loudness Wars” began.
CDs sounded louder, but at the expense of dynamic range being squashed out, due to the overuse of limiters & compressors on the masters.
Unique to RMR, CD ’82 Mastered tracks stay true to the original way to master digital tracks…keep it quiet but keep all the detail.
Look at the above picture of the same track.
The top one is how the artist mastered it for digital release, the bottom one is the CD ’82 mastered version.
Quieter, but look how it isn’t squashed. All the subtlety and details are there.