The Fender Quad Reverb was a direct descendant of the Fender Twin Reverb. Both featured the same circuitry, but while the Twin had two speaker cones, the Quad had four.
Along with another amp in the series (the six-coned Super Six Reverb), the Quad was launched in 1972. It was available in 3 speaker varieties ranging in price from $675 to $1095. The speaker cones available were standard Fender 12", Fender PS 12, or JBL D-120F.
The following comes from the 1976 Fender catalogue
A real high performance machine, the Quad Reverb revs up with 100 watts RMS power. Your engine really roars, thanks to the heavy-duty, wide range 12" speakers. And check out the channels, each with separate controls and two instrument inputs. With master volume control, you can steer your sound straight down the track or add any degree of distortion. Whatever sound you want, the Quad Reverb is built to travel hard and fast
Amplifier advertisements originally published from 1972 onwards. Click on the images for larger copies. Check out other vintage Fender advertisements
Fender Quad Reverb - Another Step In The Right Direction (1972)
Fender advert for two new amplifiers the Quad and Super Six. Both were 100w combos based on the Fender Twin amplifier, available for some time, and also pictured, but with 4x12" and 6x10" speakers ...
Fender Quad Reverb - You Get There Faster on a Fender (1974)
Fender Stratocaster guitar, and Quad Reverb amplifier. Another one of Fenders early to mid-seventies adverts featuring brightly coloured illustrations, and equally colourful text