Tuesday, 24 December 2013

Peavey Hotfoot Distortion

It's christmas eve already. Ho ho ho for all you builders out there!

We seem to have very few effects with buffered bypass, so i think i found a suitable one. The Peavey HFD-2 Hotfoot Distortion. It's more or less 1:1 with a Rat, but with added JFET input buffer which also takes care of the bypass buffering. There is only 2PDT stomp needed for the bypass, and it takes care of the LED and silencing the circuit too. The original has J231 JEFTs for the buffers, but as those will be a pain to source, i'd suggest using 2N5457 which are used on all the Rats. And those are just buffers, so the tonal differences will be practically none. If you change the values at 1K5 and 47R, both leading to 2µ2 caps, you can get yourself a Rat with a JFET buffered bypass. The method of taking the distortion out when bypassed is also worth a mention. Adjust the value of R-LED to match your indicator LED.


  1. Just wanted to wish Miro, Mark, and all a very Merry Christmas! Coming up on my 3rd year of building. Can't believe how much I've learned from this site and all the community that comments. Thanks for all the great layouts Mark and Miro. You guys rock...

    Hope you all find a big load of pedal parts under your tree tomorrow morning. Now go warm up that soldering iron!!


    1. Thanks man, and all the best to you and yours too!

  2. Built one and fixed the layout (as there was one stupid little error in there). For some reason i've always loved Rat derivatives more than the original real thing. This one's no exception. And the buffered bypass isn't bad at all. Think i'm boxing this soon(ish).

    Mark! You should get ready for you speech. There's only three more to go until 600!

  3. A note for those building this and using it with a looper...put a 1meg pull down resistor at the input....otherwise it will charge the input cap and POP.
    Not a problem if used as intended (without looper, using the onboard switch) because the input is always "in circuit" with the buffered bypass....but using the looper leaves the input "hanging" and the input cap charges.