Model/Circuit Number: AA270, AA769, TFL5000D Years of Production: 1968 – 1981 Era: Silverface Configuration: Piggyback Head with Extension Cabinet Controls: Silver forward facing with blue labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 Faceplate Front: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass – Vibrato: In, In, Bright Sw, Vol, Treb, [...]