Jerry Garcia’s McIntosh amp


Does anyone know what model McIntosh amp it was that Jerry used when he played live onstage?  He sure seemed fond of it and I might like to play my guitar thru one as well.  Thx,  Gordon
128x128doug714
Y’all sound like you may already know but there’s a great book called Grateful Dead Gear (with lots of photos) that chronicles everyone’s rigs and their changes. 
My reference is late 60`-70`s. I helped with their sound at about 100 concerts during this period. In the beginning Jerry was very picky about his equipment guitars were custom made except the one from Gram Nash. During the late 70`s that seemed to have changed somewhat, on more than one occasion on stage he would plug into someone else`s amp knowing or not knowing we never asked. What was done in the 80`s i do not know.
@rh67 how was working with (or more like ‘under’) Owsley? Assuming you got to. Was he as bossy as they say? I have a funny theory that the Dead had that lil bit of extra magic in ‘72 because Bear (RIP) was in prison, so his abrasive vibe wasn’t swirling around. Probably a silly theory but I always think of Bobby and Phil yelling at Bear from the stage to stop f-ing with the monitors and the arguments he had with Steve and ramrod, etc.