* Luther Perkins primarily used a Fender Deluxe Reverb. This amp was his go-to for the Johnny Cash sound.
* The Fender Super Reverb came out later, in 1964. By that time, Luther Perkins' career with Johnny Cash was already established.
However, the Fender Deluxe Reverb is very similar in sound and feel to the Super Reverb, making it a popular choice for players looking for that classic "twangy" Fender sound.