Those DR ratings for Back In Black are a bit surprising but not fatal. I’ve always thought the CD copy I have to be a louder but otherwise good quality recording. Its a good example of why there is more to music than just absolute DR, especially in popular genres. I have many CDs especially newer remasters that have a lot to recommend even if absolute DR is not one of those things. Pop/rock/blues based amplified music does tend to be loud overall when heard live. Classical and other more acoustic forms tend to vary more. Those are the ones where bad DR tend to impact my enjoyment more. But like most here I suspect I still love a great recording with great DR.
Fact is if records were made to full DR potential, most players used today would not be able to track it and would probably even jump the grooves when teh real dynamics hit, like as used to be the case when the early Telarc digital recordings hit the market and would not play on any but the best vinyl setups of the time. With more dynamic CDs or digital a high power amp (Class D now offers smaller lighter and less expensive options for that) and A decent pair of speakers is all needed. Extracting the music from the medium is not as problematic these days with even decent quality digital found on a decent quality Iphone even.
Fact is if records were made to full DR potential, most players used today would not be able to track it and would probably even jump the grooves when teh real dynamics hit, like as used to be the case when the early Telarc digital recordings hit the market and would not play on any but the best vinyl setups of the time. With more dynamic CDs or digital a high power amp (Class D now offers smaller lighter and less expensive options for that) and A decent pair of speakers is all needed. Extracting the music from the medium is not as problematic these days with even decent quality digital found on a decent quality Iphone even.