Okay, so in effect, there are all the usual effects (Flanger, Chorus, Reverb, Delay, Phaser, Pitch, etc) these same dclins in several other types of effects (Triggered Flanger. ..).
There is also the Whammy (very good!), The Yaya, the whawha and many others. It's best to go to the digitech site for a list of all available effects.
There's also a CATEGORY effects trs trs helpful: Distortion Stompbox. This is a SERIES of distortion pedals of taking over existing distos (it mtal There's the area for example). And it can range from a little crunchy distortion distortion although the big metal.
You can have 64 presets DIFFERENT effects at the same time.
In terms of I / O, the y 'has a package. There's there are two output jack (right and left) to go to two different outputs (amp, table, pc, etc) and thus allows to have a stereo or mono output. There's also a SPDIF digital output, which is very practical for a recording to a PC (very good quality.
Then there is an entrance and exit south, which connects your PC to Gnx2 accsa and have different functions (eg editions of sound). It has many input jack on the guitar and there is also an XLR input and output. These are used for effect dernires Talker fare that can "talk" your guitar if you plug a microphone and we sang and played at the same time (a little practice I think this because if we stop singing means more than the guitar).
Another big CHARACTERISTICS of this multi-effect is that it is trs East amp simulation. We can each Defines the two types of amps (reproduction of real amps: marshall, vox, combo, etc ...) and two types of firms. After we can either use a combination of both for a single amp simulation or use either one or the other. And I must say, that it radically changes the sound.
There's also a drum machine intgre (very handy for playing alone).

UTILIZATION

This is a multi purpose easy to use, whether for shipping or use sounds live.
We see directly from the pedal, using a diode matrix, all active effects on the sound used.
Effect is modified easily (we add a particular reverb, with a particular depth, we add a chorus of a given speed, etc.).
If the pedal is connected to the PC via the MIDI, you can help Digitech software, edit sound even more quickly the next level. On the Digitech site one can send all the effects that are cre and you can also download full effect inks by other users. It's really very practical and useful. On the site each effect is listed by CATEGORY, a description and usually a sample mp3. It is also possible to safeguard its effects or even the entire configuration Gnx2 on pc (I have made several sauvegrades like that).
There can also download simulations amps and cabinets.
You can also update the version of its Gnx2 using the MIDI connection and downloading the update site (for example, I have purchased version 1.1, and mantenance j ' have version 1.3).
The Gnx2 is also very strong, that's the case, the switches or pedals. I use it in RPET and scne and I have no problem with ca. It is iron and quite heavy, the following fact that does not move on the ground when used.
There are two switches to switch banks of effects and four switches to change effect in the bank (16 banks of 4 sounds).
Another good point is the prsence of the drum machine (with several types DIFFERENT: rock, metal, pop, etc). I use trs often when I play alone (or when the drummer is not).
If one will have one small black dot is the change of an effect the other. When moving from one end to another, if both effects were not the same amp simulation, it Would there a small lag time (less than half a second) in the portion of the one another (but nothing trsgnant).

SOUND QUALITY

The quality of the effects is really exellent. The distos really impresionante, the whammy is trsraliste whawha and is well made.
For example I chopp the net effect had been done by a guy who is actually a big distortion with an octave below. And what's the I retouch a little, and now I keep it. It gives a big heavy metal well pretty cool. Note that the octave is precisely trs trs good, it does not sound synthetic as I could see him on other multi effects.
The sounds are really clear trs made as well, Night acoustic simulation that really practitioner.
I also made a low-end to record lower parts of my songs and it's really like trs (except that you can not scratch with a slapper). Again, the pitch shifter and (Otava trs are really good!
I utlise with Ibanez Edr470EX a Peavey Bandit 112 amp or a PA ca and send really!

OVERALL OPINION

I use the Gnx2 for about 2 years in RPET and scne and I must say it changed me from what I had before (zoom gx-707).
The strengths of this multi-effects: distos, the amp simulations, the output numrique, CONNECTIVITY in the PC and the quality effects.
This multi effect can be between 400 and 500, and it gives me a good report qualitprix trs.
There's also versions Gnx3 and GNX4. Is identical to the Gnx3 Gnx2 and offers in addition a multi-track editor to record his morceux above and 3 or 4 bass amp simulations in case you want to plug in his bass on Gnx3. The GNX4 is the same as when he Gnx3 and offers more and more quleques connectors (like the line in to connect a stereo, etc.) and a SmartMedia card reader to record its effects and morceux above.
I record my directemet digitally on PC to work again although all the tracks and the site of several people Digitech cre bass amp simulations that can be downloaded from the Gnx2. Do not need the options supplmentaires Gnx3 and GNX4, I chose and refer the Gnx2.