Listen: This really isn't rocket science. it is logical and provable. Some recording engineers used the cheapest equipment, wiring and mikes that they could find and were solely concerned with getting the music on tape. Some couldn't afford or didn't care about the latest and greatest recording equipment. Especially the mikes. You go to a good studio with the cheapest radio shack mixer, mikes and recording equipment vs the top of the line equipment and record the same performance/artist and you tell me that the recordings played back on decent equipment won't reveal how badly the recording was? of course it will. take most cd's from the early eighties and they sound as if a tweeter aimed at your ear with a drill. This is why so many recordings are re-mastered. an attempt to fix the early recording issues. or to make more money, or both. This contributes first hand to "listeners fatigue" Ever wonder why you have trouble sitting for a long period some times listening? Many times it isn't the equipment, it is the recording itself. it simply drives you out of the room. like a magpie in your living room. Don't get me wrong. Many times the music is great. But the recording is really poor.
enjoy
enjoy