Dating fender deluxe reverb
Summary “If an alien came to earth and wanted to hear an American guitar sound, I’d play him my Twin with a set of Jensens”. Having two pairs of 6L6, the popular and traditional two-channel AB763 circuit design, a diode rectifier and enormous transformers (power & output), it offers tons of clean headroom and volume for unmiked gigs and really big stages.
The Twin Reverb is the king of Fender blackface amps.
If you pull one tube the other channel’s tube will be hotter biased and offers more gain.
It is so easy to enable and disable that it can hardly be called a mod.
Vice versa; If you’re using the Normal channel, you can pull out the V2 tube.
All AB763-similar circuits (Deluxe Reverb, Super Reverb, Pro Reverb, Twin Reverb, Vibroverb, Vibrolux) are designed so that they share the cathode cap and resistor (25 u F/1500 ohm) and pulling one of the tubes will changes the effective value of the resistor they both share.
Sadly, we are seldom offered the opportunity to turn the volume above 3 on a Twin Reverb.
Instead we have played many nights with a thin and unpleasant tone, even worse with a sparkling, clean sounding strat.