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The Persuader, Tube Drive Effects Pedal Kit

The Persuader, Tube Drive Effects Pedal Kit
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SKU:K-930
Price: $64.95
In stock
File downloads:
image/jpeg iconInstructions (382.43 KB)
image/jpeg iconSchematic (72.9 KB)
image/jpeg iconSound Sample (2.12 MB)

Build your own tube preamp pedal built around a 12AX7 tube. Go from clean, warm tone to smooth, real tube overdrive. This kit includes pre-drilled die-cast aluminum enclosure and all parts with easy to follow instructions. All you need to provide is solder and soldering iron. The Persuader allows for easy access to the tube, giving you the ability to quickly experiment with different tube brands and 12AX7 tube relatives. Operates on a 9V battery or AC adapter, which is not included. When completed, this pedal draws considerable current and battery life will be short. The Godlyke 9-volt adapter (M-PAS-S) may be purchased separately to power your new pedal.

Product Specifications
OptionTypeValue
All modelsWeight0.95 lbs.
All modelsPackaging Length8.4 in.
All modelsPackaging Width6.1 in.
All modelsPackaging Height1.5 in.
diy, effects, pedal, power, boost, mod, modkitsdiy, new_item, kit, kits, pedals, persuader, tube, K930

Product Reviews

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Bought this recently as a tube overdrive for my bass. This being my first experience building a pedal myself, I didn't want to go overboard with too many extras. I printed out the colored version of the instructions from the MOD website which made it very easy to read and decipher. It is true what some people are saying about the grounding issues between the terminals and the pots. I solved this with two small strips of electrical tape for redundancy. The build was very comprehensive and took me about 2 1/2-3 hours to complete. I too had a little difficulty fitting the chinese tube into the socket, but after a little fiddling and pin adjustment it went right in. The tone on this pedal, for bass, is awesome. I get a nice fuzzy tone with the gain all the way up and warm break up with it set a little lower. The volume output is not quite as high as I'd like it, but perhaps a different tube will solve this issue. Three cheers to a fun build and a great pedal!

As a avid DIYer and bass player I came across this site and immediately ordered the Persuader. After a few short evenings of soldering and assembling I was ready to test it out only to find that i wasnt getting any of the tube effect at all. One email to customer service pointed me in the right direction for troubleshooting and ended up having a bad mosfet which they promptly sent to me for free! Not only did I increase my soldering and wiring capabilities and get to troubleshoot a minor problem but now i am left with a totally KICK A$$ pedal that ROCKs! Also i picked up a few new tubes to modify the sound: jj803-s, sovtek LPS, and tubestore preferred series. So far the JJ long plate has the best break up for bass while the sovtek has a little to much break up, while the preferred series sounds good all around it fits a guitar sound better.

I highly recommend this for anyone looking for that nice responsive beefy tube overdrive tone or if you are looking to smooth out your tone. It is worth the work and it is educational. I recommend getting a 12au7/ecc802, I got mine from JJ and it gives more rich overdrive tones. Amplified parts shipped it immediately, I ordered it late at night and received it the next day.

This was my first DIY pedal built. I had fun making it. It has a versatile fuzz tone, lower the gain and you have a cleaner drive tone, crank the gain control and you have a thick tubby fuzz tone. Great pedal for blues and classic rock. I will be posting my review on this great pedal on youtube.

Read the instructions throughly. The main problem I had was grounding problem, the two terminal strips along both sides of the 9 pin tube socket were touching both volume, gain pots and the tube socket base bracket. The spaces between these areas are so tight and can easily be shorted. The instructions pointed this out.

Great fun to build this Pedal. A drawback is the gain pot, which does some nois while turning the knob.

Very Cool Overdrive. Very easy build. The instructions are clear and detailed. All in all, you get a very nice end product for the $!

I bought the persuader and assembled it one Sunday afternoon. A very cool tube overdrive. Weird about the Chinese 12AX7 fitting into the tube socket - mine fit in without problem.

The Chinese tube supplied doesn't fit into the socket..too big of a base. No problem..have many other 12A_7's to roll. First off...this isn't a distortion box....I'd call it a volume boost..which it does just fine, without killing the orig input tone. I'd like to modify to overdrive the tube so gain pot really works...any suggestions? I bought the power supply wall wart and it works perfectly.

Correcting my previous review, I'm giving this pedal an excellent rating instead. I've added a tone knob with 10nf and 250k pot in series to ground before the volume knob. The pedal is a very balance pedal with the tone control. I wanted more boost therefore I've change the 33k resistor to 68k like the first stage. However this added boost makes the 5751 tube sound muddy/unclear. Went back to the 12AX7 and everything just sound right and perfect with added boost.

I wanted a DIY tube overdrive and one that I can mod to my taste of sound.This is a good sounding tube overdrive and took me an hour or 2 to wire it up. By default it's bassy and muddy, so much that I wonder if it's design for bass guitar instead. I've change the value of the capacitors to 47nf input, 47nf between the tube pins and 1uf for output. Everything is perfect with a 5751 tube instead of 12AX7. I missed having a tone knob and going at that soon. A nice project and good sounding tube overdrive, try it and you won't regret.

Fun build. The instructions don't always follow the most logical layout in terms of wiring (for example you may have to go back and wire under other soldered connections). The background noise is VERY low for the amount of output available. At unity output with the pre-gain cranked this pedal is fuzzy, but the magic in this pedal is using it's very high volume output to push your preamp tubes in addition to the internal gain. Worth the price and very touch responsive. More of a tube based mild-fuzz/boost than an overdrive. I have almost no soldering experience, and mine turned out great.

Great pedal and Cool color! It makes a handy tube tester besides a real tube overdrive, you can get different gains and tones with an assortment of various tubes. Excellent and easy to follow instuctions with layout pictures, and You made it Yourself!

Very fun. Took me 5 hours to assemble, I've got almost no experience on the solder iron. its got the good fuzz.

This is SWEET! I also bought 5 other 12AX7's and each one gives it a different tone, it comes with an unbranded tube which I think is Chinese I tried the Tung Sol, The JJ and the E-H all made sound different this thing is cool!

I really wanted a tube overdrive and this worked out great! It took me four hours, but it was well worth it, and the best part - is that I BUILT IT MYSELF!