This was one of the earliest tape delay processors for the guitar – better known as an echo effect – released by Fender in 1958. Although it was built into a tweed-covered carrying case to match the Fender amplifiers of the time, the EccoFonic was actually a product sourced outside the company. In fact, in 1959, the designers of the device decided to build and market it themselves. However, the company did not fully understand the music business and the EccoFonic was short-lived. Fender introduced its own internally designed tape echo in 1963, which it named the Electronic Echo Chamber.