DOD FX100 Integrated Tube Even Harmonic Overdrive

DOD FX100 Integrated Tube Even Harmonic Overdrive

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FX100 Integrated Tube Even Harmonic Overdrive, Overdrive pedal from DOD.

1 user review

DOD FX100 Integrated Tube Even Harmonic Overdrive tech. sheet

  • Manufacturer: DOD
  • Model: FX100 Integrated Tube Even Harmonic Overdrive
  • Category: Overdrive pedals
  • Added in our database on: 04/18/2004

The FX100 Integrated Tube Even Harmonic Overdrive was introduced at Summer NAMM 1996, along with the FX101 Grind distortion pedal. Sharing the same circuitboard as the FX101, the FX100 was voiced to emulate Marshall tube distortion, but compared to the FX101 it is closer to an overdrive rather than a distortion pedal. In a first for DOD, the FX100 and FX101 also included a speaker emulator output jack, for plugging directly into a mixing board or a recorder. Although the FX100 was well-received, it was discontinued in 1998 as DOD revised their effects pedal lineup.

  • Controls: Output, Lows, Highs, Drive
  • From the manual: "The FX 100 I.T. (Integrated Tube)TM isn't just an overdrive distortion, it has special circuitry that adds even harmonics, emulating tube overdrive distortion. All of the dynamics of an overdriven amp are present. The distortion will 'clean up' when playing softer, and to get a really aggressive tone, get an aggressive forearm. Since the tone controls 'LOWS' and 'HIGHS' are centered at popular amp frequencies, this pedal sounds like a preamp, not a pedal. As an added bonus, the FX100 now gives you the ability to run straight to the board with the speaker emulation direct out jack."
  • Technical info:


  • Notable IC chip: two 4558-type op amps
  • Component-side circuitboard image: June 1996
  • Related circuits: FX51 (loosely based), FX101 (same circuitboard, but D6 is missing in the FX100); DOD's I.T. circuitry was also used in a series of small practice amplifiers (including the "Grind I.T.") released at the same time.

DOD FX100 Integrated Tube Even Harmonic Overdrive user reviews

Average Score:4.0(4/5 based on 1 review)
 1 user review100 %

mooseherman's review

DOD FX100 Integrated Tube Even Harmonic Overdrive
This is a basic distortion pedal, though the name would imply that it's somehow better or more elaborate than that. it's not capable of being edited with a computer, or controlled by midi. It's a tube pedal, and it sounds like it too. It is not rackable.


Editing on this pedal is pretty basic. There is a volume knob, a gain knob, and two tone knobs. There is really no need for a manual, as this is simple enough.


This is really the only area of interest with this pedal. This is not your average overdrive. A lot of overdrive pedals seem to try (and fail) to emulate the sound of a tube amp being pushed really hard. This one actually will succeed with that effect, although it will do it at a much lower volume. This is great for bands who like to rehearse somewhat quieter than they play live, or whose rehearsal rooms aren't ideal acoustically and can't handle loud guitar tones. I will say this, though; if you actually own a great tube amp, and play it with a single-coil pickup guitar like a Strat, this pedal might not really be what you are looking for. In fact, it might be a waste of time, considering you can get a superior tone with just your guitar and amp. However, for many people, this pedal would really be a great treat. I know that people who own Marshalls sometimes complain about their lack of clean tone character, and this pedal has certainly helped them in that regard. Another cool thing about this pedal is its use in conjunction with other distortions. It helps give a raw, physical quality to great fuzz tones (like those from the Big Muff or similar products), and it also helps with amp distortion considerably (like on the aforementioned Marshalls). This thing can be useful, depending on what you want to get out of it.


I wasn't expecting much out of this pedal, as DOD products have sometimes left me disappointed (and angry). I think that for the price, this is a good deal, as long as you don't expect too much out of it. Expecting a great, rocking distorted tone is too much. What this pedal provides is just a small boost to put you over the edge. I'd highly recommend it to someone who can't get that natural distortion from their amp that they want, or someone who needs to put their distortion a little bit more over the edge.

DOD FX100 Integrated Tube Even Harmonic Overdrive images

  • DOD FX100 Integrated Tube Even Harmonic Overdrive
  • DOD FX100 Integrated Tube Even Harmonic Overdrive
  • DOD FX100 Integrated Tube Even Harmonic Overdrive
  • DOD FX100 Integrated Tube Even Harmonic Overdrive

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Other names: fx100 integrated tube even harmonic overdrive, fx100integratedtubeevenharmonicoverdrive, fx 100 integrated tube even harmonic overdrive, fx100 integratedtubeevenharmonicoverdrive, fx100integrated tube even harmonic overdrive

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