Several variations on the amp's original design have been produced through the years, including the Twin Reverb, the Super Twin, the Twin Reverb II, and the Twin Reverb '65 Reissue.The Cyber Twin, which combined a tube amp with a computerized processor, was introduced in January 2001.The finishes were baked in the Kauffman family oven.They were made in three different sizes, 1×8" (one 8" speaker), 1×10", and 1×15".The original Fender amps were tube-powered and the company also started producing solid-state models in the late 1960s.Most of the amps were finished in a "gray crinkle" finish.They are all very rare today and few have survived.
The early models of the larger "narrow-panel" tweeds are also remarkable for their refined electronics whose circuit design incorporated dual 5U4 rectifiers in the Twin and Bassman models, another improvement given Fender's quest for a louder, cleaner amplifier.
It is stamped into the chrome chassis with a white letter “C” (for Champ) and the serial number, also in white.
As you can see from the photo below, the serial number of my amp is C 09556.
However, tubes are still used in several specialized applications such as guitar amplifiers (also called a valve amp outside the U.
S.) and high power RF transmitters, as a display device in television sets and in microwave ovens.
Leo Fender began building guitar amps before he started manufacturing guitars.
The first of these amps were the K&F models, which were produced between 19.
The amps are known for their characteristically clean tone.
The Twin has seen a number of revisions since its introduction, both internal and external, with its designs sometimes varying greatly from one year to the next.
The Fender Twin is a guitar amplifier made by Fender.
It was introduced in 1952, two years before Fender began selling Stratocaster electric guitars.