Model/Circuit Number: Years of Production: 1977 – 1980 Era: Configuration: Combo Controls: Black, forward facing w/ white labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 (EQ knobs numbered -5 to +5) Faceplate Front: Power Sw, Standby Sw, Pilot Lamp – In, In, Vol/Bright, Treb, Mid, Bass, Presense, Reverb – 2300 Hz, 1250 [...]