I do not want to do this because I just got the FKR, but my band agreed collectively that I would never be able to use a rat type distortion in the funk band. I love this pedal and if it doesn't sell I won't be to pissed, it gives a nice tube like overdrive all the way to face melting distortion.
So many knobs and switches, you can dial in just about any type of dirt possible.
Super Rare - From one of the funniest - cooliest builders around
from Beavis:
http://beavisaudio.com/projects/FKR/
::::The Four Knob Rat (aka the FKR)
"The Proco Rat is probably one of my all-time favorite pedals. Nothing comes close, as far as I’m concerned, to the raunchy irreverent growl that comes out of that box. A few months ago I built a Rat clone and started studying the circuit. What I discovered is that the Rat topology is an ideal laboratory for mods. It uses a cheap nasty LM308 opamp with a pathetic slew rate, and bog-standard 1n914 diodes that clip the output. So why does it sound so good? I think a combination of things like the interesting feedback loop to ground and the fact that the LM308 adds a lot of its own clipping.
I’ve long wanted to try and create a sort of distortion pedal “synthesizer.” No single pedal meets all of my needs. Wouldn’t it be swell if I had a distortion stompbox that I could flip switches and turn knobs so as to create a whole array of sounds. And if the Rat is a great lab for mods, maybe that’s a good place to start? Indeed! That how the Four Knob Rat (FKR) started.
The FKR started out as a clone of the Rat, but I deleted the input buffer stage and added true-bypass switching. From there, I’ve moved the stock 2-diode clipping components off to a separate circuit stage that allows switching between:
* Stock: 2 x 1N914 diodes
* Stock/Asymmetric Clipping: 1 x 1N914 + 2 1N34 Germanium diodes
* LED: 2x red LEDs for much more intense clipping (incidentally, this is the difference between the Rat and the Turbo Rat)
* MOSFET: 2xIRF520 MOSFETS + 1N34A Germanium diodes for boutique clipping as found in various pedals including the Fulltone OCD and Hermida Mosferatu.
Additionally, I implemented the Ruetz Mod whereby you swap one if the fixed resistors in the feedback loop with a pot. This allows you to mellow out the Rat—you can go from slightly dirty boost, to mild overdrive to full out face-shredding tone pownage.
Finally, I added an additional clipping section to the feedback loop of the LM308 opamp. This clipping section allows the choice between no loop clipping, red LED, or MOSFET clipping. So in essence you have a new section that is more like a Tube Screamer overdrive. And you can have it turned on at the same time as you have any of the other clipping mods turned out. Outrageous!"
crazy Mint!!!!!@!
Beautiful blue LED, not to bright like MXRs
250 Shipped OBO
(weird insert of some dwarf porn - im guessing I dont even know)
Here is a super OG Delta Labs Effectron II
Some Rack rash - not bad - missing knobs (no big deal)
Super lush analog juiciness
-it does anything from chorus/flanging-lush delay-to crazy feedback madness
-great for the studio
100 shipped
And a lonely ernie ball 25K volume/expression
- great volume pedal for active electronics
- great expression pedal for fx units
- box, feet, like new
60 shipped
TRADES:
Voodoo Labs Sparkle Drive (preferably with Keeley Mod)
WMD Fatman (Super or Reg) - really need this for the funk
Demeter Compulator
Subdecay Prometheus
-or anything else - although I am not really interested in modulation/delay/reverb, etc
-mainly interested in light overdrives(preferably with blend), compressors, filters
So many knobs and switches, you can dial in just about any type of dirt possible.
Super Rare - From one of the funniest - cooliest builders around
from Beavis:
http://beavisaudio.com/projects/FKR/
::::The Four Knob Rat (aka the FKR)
"The Proco Rat is probably one of my all-time favorite pedals. Nothing comes close, as far as I’m concerned, to the raunchy irreverent growl that comes out of that box. A few months ago I built a Rat clone and started studying the circuit. What I discovered is that the Rat topology is an ideal laboratory for mods. It uses a cheap nasty LM308 opamp with a pathetic slew rate, and bog-standard 1n914 diodes that clip the output. So why does it sound so good? I think a combination of things like the interesting feedback loop to ground and the fact that the LM308 adds a lot of its own clipping.
I’ve long wanted to try and create a sort of distortion pedal “synthesizer.” No single pedal meets all of my needs. Wouldn’t it be swell if I had a distortion stompbox that I could flip switches and turn knobs so as to create a whole array of sounds. And if the Rat is a great lab for mods, maybe that’s a good place to start? Indeed! That how the Four Knob Rat (FKR) started.
The FKR started out as a clone of the Rat, but I deleted the input buffer stage and added true-bypass switching. From there, I’ve moved the stock 2-diode clipping components off to a separate circuit stage that allows switching between:
* Stock: 2 x 1N914 diodes
* Stock/Asymmetric Clipping: 1 x 1N914 + 2 1N34 Germanium diodes
* LED: 2x red LEDs for much more intense clipping (incidentally, this is the difference between the Rat and the Turbo Rat)
* MOSFET: 2xIRF520 MOSFETS + 1N34A Germanium diodes for boutique clipping as found in various pedals including the Fulltone OCD and Hermida Mosferatu.
Additionally, I implemented the Ruetz Mod whereby you swap one if the fixed resistors in the feedback loop with a pot. This allows you to mellow out the Rat—you can go from slightly dirty boost, to mild overdrive to full out face-shredding tone pownage.
Finally, I added an additional clipping section to the feedback loop of the LM308 opamp. This clipping section allows the choice between no loop clipping, red LED, or MOSFET clipping. So in essence you have a new section that is more like a Tube Screamer overdrive. And you can have it turned on at the same time as you have any of the other clipping mods turned out. Outrageous!"
crazy Mint!!!!!@!
Beautiful blue LED, not to bright like MXRs
250 Shipped OBO
Here is a super OG Delta Labs Effectron II
Some Rack rash - not bad - missing knobs (no big deal)
Super lush analog juiciness
-it does anything from chorus/flanging-lush delay-to crazy feedback madness
-great for the studio
100 shipped
And a lonely ernie ball 25K volume/expression
- great volume pedal for active electronics
- great expression pedal for fx units
- box, feet, like new
60 shipped
TRADES:
Voodoo Labs Sparkle Drive (preferably with Keeley Mod)
WMD Fatman (Super or Reg) - really need this for the funk
Demeter Compulator
Subdecay Prometheus
-or anything else - although I am not really interested in modulation/delay/reverb, etc
-mainly interested in light overdrives(preferably with blend), compressors, filters