Fender quad reverb dating
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.
Fender switched back to the blackface era cosmetics some time in 1980.
However if you can just park it and plug it in (at a rehearsal space or at a club or recording studio as a house amp) you get a heck of a lot of serious guitar tone for not much money. The grill is a little worn in places but the amp sounds great -- and LOUD.
If your amp is “ultralinear”, these kits are not intended for your amp.
You can tell if your amp is ultralinear by looking under the speaker jack on the back panel.
After the preceding looks of the early 50's (TV front from 1950 to 51/2; wide panel '52–54), Leo Fender changed the cabinet design again, this time opting for no extra wood on the front of the amp, except for the narrow top and bottom panels that hold the baffle board to the cabinet.
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.
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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.