I remember in the mid-60s factoring in the extra dollar on the price of a stereo album, the fact that all my 45 rpm singles were mono, as was my bedroom record-player.
It was only since I got my 5.1 system running that I realized my entire treasured collection of vintage Jamaican reggae re-issues on CD are mono. Pretty obvious when the DPLII surround sound field collapses to the center speaker decoding mono.
Happily switch to 5-channel "stereo" to fill the room with duplicate track from every speaker.
To get this thread back on topic
:
Now we have Atmos, can folks do the same thing and get all 9.6.4 speakers blasting a Phil Spector "dome of mono sound?"
That might get me a little "jazzed."