I recently stumbled on an old 1977 Yamaha g100-115 amp... I picked it up on the basis of my limited $$ but it turned out to be a great find for my first amp ever.... yeah i'm a totally green player... just started 5 months ago

just wondering if anyone had an opinion on what I think is a pretty great amp so far...

useless fact... my only guitar so far is a yamaha rgx-121z