Along with the rest of the Fender amp lineup, the Champ and Vibro Champ adopted the “silverface” style in 1968, and both existed in this form until 1982, when they were given a new blackface control panel shortly before being discontinued.A new and very different Champ then appeared—1982’s Champ II boasted a 10” speaker, all-new circuitry including a master volume and bright switch, and an enormous 18 watts of power from dual 6V6 power tubes (all previous Champs never pumped more than 6 watts).

Electronic components such as transformers, potentiometers, speakers, and some capacitors are often stamped with a date code, which indicates the manufacturer and the manufacturing date.

The code follows the format: = a number from 1 - 52 indicating the week of manufacture.

Follow us for news, promote yourself, or show off your handiwork/sound: @billmaudio, billmaudio Friends of Billm Audio, it is my sad duty to report to you the passing of Bill Machrone, this past Sunday, 30th of October.

As some of you know, he had been waging an impossible battle against glioblastoma multiforme for the past three years.

It was a fight he took to bravely and with great dignity, knowing the inevitable outcome, which came peacefully and while he was surrounded by his immediate family.

I appreciate all of our Billm Audio friends and family who have stuck with us through this difficult time and, after a period of mourning, will be carrying on his legacy through the continued administration and growth of Billm Audio.A heartfelt thanks to all who reached out during unpleasant times, all our patient supporters and, of course, our friend David Allen at Allen Amplification!Here’s to you guys and to a fresh start with our continuing commitment to quality tone here at Billm Audio!Lasting into the mid-1960s, this version would be the last of the original-era Fender tweed amps.Fender overhauled the Champ by fall 1964 in the “blackface” style—black Tolex covering and black front-mounted control panel with separate bass and treble controls (although a very few transitional models were made in which the blackface style was applied to the last of the older top-panel cabinets). 1964 also saw the introduction of model with built-in tremolo called the Vibro Champ.Like most Fender amps of the time, the Champion 600’s TV-front designed changed to a new tweed-covered “wide-panel” style in 1953; earlier versions still said “600” on the control plate; later ones said “Champ-Amp.” The “narrow-panel” style was adopted in 1955, with the control panel moved to the top, new grille cloth and a substantial circuitry redesign that would endure mostly unchanged for a decade (a 12AX7 preamp tube and short-lived high-voltage filter section choke).