of matched impedance...
Volume, dynamic range, equalization and frequency response arguments have been around for as long as we have been recording.. ie. since the 1880s!
When "electrical" recording was invented in the 1920s, essentially by Western Electric working with the Victor Talking Machine Co. (which became part of RCA), many commentators and critics complained of the unnatural brightness of the new recordings.
Suddenly recordings had upper frequencies approaching 9khz ... unheard of in the acoustic era.. but these new recordings sounded dreadful on older gramophones/phonographs. Only newer gramophones with improved horns (look up orthophonic or folded horns) revealed the full beauty of the new electrical recording.
And with electrical recording came equalization which has been an essential part of the recording process ever since.
In the 1950s came the battle of equalizer... as the major record companies each adopted different equalization schemes ..ultimately settled by the adoption of the RIAA standard.
There really is nothing new...