Just to add some more fuel. I attended at least 250 shows before 1996. I have been in the music business for over 40 years and do know a little about gear and sound. I produce a international trade event that specializes on the subject (www.axpona.com
) I also play professionally and started in music way before I ever heard of the Dead. It was a neat experience to see the Macs and Crowns in the early seventies and actually be using them myself. There are major differences in amps, guitars, speakers, transformers, the setup and setup people who make it all work. There are big difference in materials and technology. Some people have better technology than others, run faster, jump higher, higher IQ's, better ears hell some even have open minds maybe from a Dead show or some fairy dust. The really good news we can all think what we want that is a personal liberty no one can steal.