Fender Champ
The Fender Champ was a guitar amplifier made by Fender. It was introduced in 1948 and discontinued in 1982.[1] 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.
Champion 800/600[edit]
First introduced in 1948, it sported the name "Champion 800"[2] (with 8" speaker), changing a year later to "Champion 600" (6" speaker) with circuit designation 5B1. It was rated at about 3 watts, featuring a "T.V. Front" style cabinet; the 800 was covered in greenish fabric while the 600 featured two-tone blonde and brown vinyl covering. This style lasted until 1953, when Fender's cabinet style changed to the "Wide Panel" design with a tweed cloth covering. Fender also renamed the circuit the "5C1", "5" standing for the decade (1950s), "C" for the third circuit revision, and "1" was the Champ's circuit designation. The 5C1[3] circuit was extraordinarily simple, using one 6SJ7 pentode in the preamplifier section to provide a single stage of voltage amplification, one 6V6 beam power tetrode in the power amplifier section, a 5Y3 rectifier tube and a single volume knob with no tone controls.
The Champ[edit]
By 1955 Fender started putting its amps in the "Narrow Panel" tweed cabinet with a plastic oxblood color grill cloth,[4] and by this time the Champ was officially named the Champ (model 5E1). Through 1957, Champs only had a six-inch speaker, but the 1958 model 5F1 featured an 8". The 5E1[5] and 5F1[6] circuits used a 12AX7 dual triode in the preamplifier to provide two stages of voltage amplification, and a single 6V6GT power tube to produce about 5 watts. A Champ from this era can easily be dated by the code stamped on the tube chart,[7] by the code stamped on the speaker[8] or by its serial number.[9]
Blackface/Silverface[edit]
The 5F1 lasted until 1964, when the Champ finally made the transition to the "Blackface" style of circuit and cabinet. A small number of the last 5F1 style cabinets were covered with the "Blackface" amp cosmetics around this transition,[10] as the factory most likely ran out of the tweed cloth covering. In 1964, a Champ with tremolo was also introduced. It was called the Vibro Champ. The Champ switched from Blackface to Silverface four years later. Fender brought back the blackface cosmetics for a short time in 1981 before discontinuing the Champ the following year.
Vibro Champ[edit]
The Fender Vibro Champ was a guitar amplifier made by Fender. It was first introduced in 1964 and discontinued in 1982. The Vibro Champ featured built-in tremolo with controls for speed and intensity. The silverface version served as a basis for the Bronco student amplifier of 1967.[13]
Vibro Champ XD[edit]
In 2007, Fender reintroduced the Vibro Champ as the Vibro Champ XD, part of their "Vintage Modified" series. Aesthetically, the XD is based on the Champ from the blackface era. Unlike the Champion 600, which has a strictly all-tube audio signal path, the Vibro Champ XD's tube circuitry is complemented by a digital signal processor (DSP) that functions as a pre-amp by modelling 16 different amplifiers. The effect of the volume, gain and tone control knobs varies according to the selected amp model. The digitally modelled signal is fed into a class-A single-ended tube circuit, with a 12AX7 output tube driver, and a 6V6 output tube. The amp also comes equipped with DSP effects, including reverb, delay, chorus, tremolo, and Vibratone (there is no spring reverb tank).