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Tweed Fender Champ Rectifier Tube – 5Y3GT

2009 December 20
by Jason Isadore

The 1959 tweed Fender Champ is a 5 watt single ended Class A amplifier.  That means that it has one rectifier tube – the 5Y3GT.  Wikipedia has a brief write up about it.    The 5Y3GT is all the way to the left when looking at the electronics.  The one in my 1959 Champ was manufactured by RCA.  So what does a Rectifier tube do?  Again, Wikipedia does a better job explaining it than I could, but basically, it changes the alternating current from your wall into direct current for use in the amp.

Tweed Fender Champ Tubes (Left to Right) 5Y3GT, 6V6GT, 12AX7

Tweed Fender Champ Tubes (Left to Right) 5Y3GT, 6V6GT, 12AX7

5Y3GT

5Y3GT

6 Responses leave one →
  1. Dave fowler permalink
    January 10, 2010

    Great site!! I read in a Weber book that he recommends using a 5AR4 in place of the 5Y3GT as the 5AR4 is a slow warm up. The amp has no standby switch so the tubes are prone to waring out quicker. Weber says the place voltage, current etcf on the suggested tube exceeds the stock tube so it will not damage the amp. I have a repro Champ and am curious. never tried it.

  2. myfenderchamp permalink
    January 11, 2010

    Interesting. Personally, I’d hesitate to put anything different in one of my vintage amps, but maybe I’m just a scardy cat! Anyone else have an opinion?

  3. March 30, 2010

    My name is Piter Jankovich. oOnly want to tell, that your blog is really cool
    And want to ask you: is this blog your hobby?
    P.S. Sorry for my bad english

  4. MyFenderChamp permalink
    March 30, 2010

    Hi Piter (your English is just fine!). Yes this blog is my hobby. I got bored one day and started writing. The response has been fantastic. Thanks for your kind words! -Jason

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