Fender Twin Reverb

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The Fender Twin Reverb is an all-tube guitar amplifier with two 12" speakers made by Fender Musical Instruments Corporation. The Twin Reverb is frequently shortened in conversation to 'Fender Twin' or simply 'Twin', though it shouldn't be confused with the Tweed or Blonde era Twin amplifiers which had vastly different circuits and no reverb.

The Twin Reverb was first introduced during the Blackface era of Fender amplifiers which was from 1963-1967. During this time the amplifer's output was rated at 85 watts. In 1968 the amplifier line switched from a black faceplate to a silver faceplate and changed the color of the grille cloth slightly, ushering in the Silverface era. The rating of the amplifier's output wattage was also changed to 100 watts due to slightly higher voltage on the output tube plates. Between 1977-1982 the amplifier's output wattage was once again changed to 135 watts. This increase was due to the output section being changed to the ultralinear topology. In 1983 the Twin Reverb II was introduced, with an output rating of 105 watts and a return to Blackface era cosmetics albeit with a different circuit. The Twin Reverb II was produced until 1986, and in 1987 it was replaced by The Twin, commonly referred to as the "Red Knob Twin" due to its appearance. It featured a dual output switch, allowing the user to select either 25 watts of output or 100 watts of output. The "Red Knob Twin" was made until 1994. In 1992 Fender introduced the '65 Reissue, with corresponding cosmetics, an 85 watt output rating, and Eminence Speakers. It should be noted, however, that the '65 Reissue is constructed with a printed circuit board and the jacks for the footswitch are 1/4" phone jacks, not RCA jacks like the vintage models.

The Fender Twin Reverb is considered a standard model for players seeking a clean sound, and it is especially known for the quality of its built-in spring reverb.