The recording is the recording.
70s rock recordings were commonly mixed and EQ'd to fit the response curves of AM & FM car and portable radios of the time. This is where the songs received the initial airplay that sold albums. Often this meant that the highs and mids were boosted to come across better on the small car and portable radios.
This was taught in one of the early recording classes I took at S.U. when I was studying broadcasting.
So, if the recording sounds good on a system, then it's likely this system has a frequency response that somewhat mirrors the peaks and dips typical in the radios of the time.
I don't think this correlates to one system being better than another, but it does correlate to a system that happens to better match the EQ'ing on those recordings.
70s rock recordings were commonly mixed and EQ'd to fit the response curves of AM & FM car and portable radios of the time. This is where the songs received the initial airplay that sold albums. Often this meant that the highs and mids were boosted to come across better on the small car and portable radios.
This was taught in one of the early recording classes I took at S.U. when I was studying broadcasting.
So, if the recording sounds good on a system, then it's likely this system has a frequency response that somewhat mirrors the peaks and dips typical in the radios of the time.
I don't think this correlates to one system being better than another, but it does correlate to a system that happens to better match the EQ'ing on those recordings.

