No release date, but maybe 1975.
Guyatone Amp Catalog circa 1975
No release date, but maybe 1975.
Guitar amp GA-380, GA-480, GA-580, GA-680, GA-680S, bass amp GA-480B, GA-580B, GA-680BS, tube amp GA-1050D, GA-1100D, GA-1100DS
Tube bass amp GA-100DB, MG-50, VA-100, VA-200, GA-2100, GA-2200
Tape echo EM-66, EM-77, wah pedal FS-4, wa-fuzz pedal FS-5, sustainer FS-6, leslie queen FS-7, microphones and speakers.