JeffTD
Senhor Testiculo
I love the sound of Led Zeppelin's recordings in particular. A lot of it was the miking techniques used, and working around the limitations of the equipment at the time. I also think that on average, the musicians were far better back then, and generally had many more hours of time to practice together than artists do now. Just watch any John Bonham live footage - he sounds just like he does in the studio, even on the poorly recorded Icelandic "Danmarks Radio" performance on the Led Zeppelin DVD, his drum tone was because of his technique primarily.
+1
There used to be some MP3's on a site floating around of Bonhams raw drumtracks - you could hear the guy friggin GRUNTING with some of the hits.