@mrdecibel @decooney I apologize to you. You stated in your post, " relative to amps and speakers ", and I took it somewhere else. My best ! MrD.
No apology necessary, no limits here ...this merely highlights there are many different factors involved from the original live performances, gear used in the old days too, pickups, mics, cabling, recordings, mastering, reproduction formats, amps, speakers and more.
Kinda funny - my buddy who just retired now uses a tube DAC in his recently completed commercial recording and mastering studio. Shhhh, dont tell anyone.
Sort of made me think again about what has changed past 50 years at all layers, from original sources to play back. All relevant discussion, enjoy! 👍