Effects pedal that I bought new in September 2006 but was built in 1988 (according to the manual that comes with the catalog of that year DOD). I found a store in St-Brieuc.
So it's a pedal that is very simple:
-A switch to lock and a knob for adjusting the effect.
-4 Small LEDs that indicate the effect level in the game (which varies depending on the attack with a pick, the output level of the guitar and of course the level of effect.
Power in the format "mini-jack," like all the DOD.

UTILIZATION

This pedal, a very subtle, is used to restore the edge and thus to its accuracy.
Which is very practical to boost or lead them out of the mix a solo.

In my line of effect:
Guitar -> Dunlop Cry Baby -> DOD OD250 -> Electro-Harmonix Big Muff (Russian) -> DOD FX87 "The Edge" -> MXR M134 Stereo Chorus -> Guyatone 107 "Moving Box" -> Amp

SOUND QUALITY

Depending on the setting, the effect is passed almost unnoticed, as it can boost the high mids and treble to give precision to the sound ...)
The advantage of this is that it is very subtle if the setting is not too great and the pedal does not change at all the grain of the amp (or distortion used).
It can lead a truly personalized, it's great.
By clean, I used to bright.

In short, a special effect, which is not used constantly, which really personalizes the SON (the first and only time I see this pedal despite my almost daily visits of several forums in recent years ...) then find new and almost forgotten in a store is a chance.

OVERALL OPINION

Effect so unique, that has not sold to be very time I think.
I assume the other manufacturers have this kind of effects pedal (I think Boss for example, makes all sorts of effects anyhow) but it's the first effect of this type that I try and c 'is really great for solos that are well out of the mix.
I use it on almost all my solos.

Try it guys, if you find one ...