This is the famous Torres MOD kit for the Fender Champ or Vibro Champ (silverface or blackface) to get a vintage "Tweed-like" tone.

fender vibrochamp Stronger, easier breakup, and outstanding tone, one the most famous mods on the net for years.

All tone controls and the vibrato (if it has one) will still be working, unlike other more primitive mods.

Very easy to install, no drilling, just replacing some parts on the circuit board (soldering needed)

You are changing the gain of the stages, their frequency response, and operating point for a fatter, stronger tone.

Originally appeared in Vintage Guitar Magazine. By Dan Torres
electrolytic capacitor
Note: The Kit includes electrolytic capacitors. 
Do not put the electrolytic capacitors in backward!! they do not work that way.

Check out the new Champ and Vibro Champ Bias Kit for these amps!!  Fender Silverface Champ

Cool and needed for a long time.

Famous Fender Champ kit
Am476 champ kit$12.00

How Does it work?

final notes on web page

Dan's Legendary Book "Inside Tube Amps" is now available on Amazon/Kindle

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Torres Engineering

Sandpiper Drive

Yuba City CA 95993

this is not a "walk in" shop

I am Partially retired due to illness, but getting better!

in business 48 years