Jerry Garcia’s McIntosh amp

In the early days they used 4 x MC240 in mono to run the PA. All 4 amps ( at 48# each ) bolted to a sheet of plywood 

wall of sound is much much more than big amps and speakers, it was based on the idea of line arrays for each player and a special two Mike system ( with feedback cancelling phase control ) engineered by Alembic.

I happen to agree on the early 70’s and I love Terrepin. I have a 1961 M240, which I treasure.

happy listening all !

There is a very informative wall of sound article at Vice.com

@tomic601 Thanks for the info and the tip on Vice.com

@roxy4 Neither is a cocaine habit.  I just blew thru a lot of $$ since the start of this pandemic that could have bought me some really nice audio gear... a whole McIntosh system for sure.  But I finally decided to stop and enter my 7th rehab attempt.  I just got home yesterday and I feel so good... like a new man!  They finally got the meds I need for my anxiety and depression (and cravings) really dialed in and that has made all the difference.

Congrats Doug on your decision to go clean. Stick with it, you won't regret it!