Fender Twin Reverb Silverface

Video Story The Fender Twin Reverb is a  guitar amplifier made by Fender Musical Instruments Corporation. The Twin was introduced in 1952, two years before Fender began selling Stratocaster electric guitars. The amps are known for their characteristically clean tone. In 1968 Fender changed to the “silverface” control panel. The circuitry was altered as well: There were changes to the bias and phase inverter circuits and, most important, the output stage. For whatever reason, the engineers at Fender added seven additional components to the output stage, effectively turning it into a semi-cathode-biased output. While these amps were supposedly rated at 100 watts, they are nowhere near as potent as their predecessors. Some players actually prefer these models, however, because they tend to compress more easily than any other Twin. According to the dates on Fender schematics, these “improvements” only lasted for a year. You can easily identify these 1968 amps by the silver-metal band around the perimeter of the grille cloth. Many notable musicians have used Fender Twin amplifiers, including Mark Knopfler, David Gilmour, Chuck Berry, Mike Oldfield, The Beatles[3] (1968 Twin Reverb amps using the AC568 circuit),[4] Jimi Hendrix,[5] Eric Clapton,[5] Peter Green, Jeremy Spencer, Danny Kirwan, Keith Richards, Steve Jones (Sex Pistols), Jerry Gar cia (Grateful Dead), Eric Johnson. Specifications Model/Circuit Number: AC568, AA769, AA270 Years of Production: 1968 – 1982 Era: Silverface Configuration: Combo Controls: Silver, forward facing w/ blue labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 Front: 68-71: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass – Vibrato: In, In, Bright Sw, Vol, Treb, Mid, Bass, Rev, Speed, Intensity – Pilot Lamp ; 72-83: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass – Vibrato: In, In, Bright Sw, Vol, Treb, Mid, Bass, Rev Rear: AC Outlet, Ground Sw, Fuse (2½A), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Vibrato Jack, Reverb Jack, Reverb Out, Reverb In Cabinet Dimensions: 20 x 26 x 10½ Hardware: Large Chassis Straps 5 5/8” Handle: Black Strap Handle Feet: Glides (68-71) or Casters (72-82) Corners: Corner Protectors Tolex/Tweed: Black Tolex Grill Cloth: Black/White/Silver Weight: 69 lbs Speaker Size: 2 x 12 Impedance: 4 ohms Model: Oxford 12T6, Utah 12 Effects: Reverb, Tremolo Watts: 68-76: 100 Watts ; 77-82: 135 Watts Tubes Preamp: 7025 Power: 4 x 6L6GC Bias: Fixed, adjustment pot or balance pot Manual Download Manual