The 1971 shows are very different. and even more so during the first engagements. I don't know how to explain it, it's like a mixture of 1970 and 1972 musically... But with it's own charm.
I have read many people claiming 1971 as not that much to write hme about, i think those rumors are because of the wast amount of audience recordings, since we get overload and feedback.
When you listen to the soundboards aviable you get a clearer sound picture but still it's not the real sound you would get from a Ree-to-reel i suspect some of the soundboards out there are many generations away from the orginal source.
The outer limit of your potential is determined solely by your own beliefs and your own confidence in what you think is possible