The Fender Champ was a guitar amplifier made by Fender. It was introduced in 1948 and discontinued in 1982. An updated version was introduced in 2006 as part of the "Vintage Modified" line. The Champ had the lowest power output and the simplest circuit of all Fender tube amps. The Champ had only one power tube, and the power stage circuit is, typically, single-ended and class A. Five watts and the simple toneful circuit allowed the Champ to be used easily and often in recording studios.