Dan electro's free speech is a talk box.
The principle is simple hose (included) out of the talk box he uses his left. He returned in the mouth of the musician. The mouth is then used as a sounding board and a well modulated by the shape of the mouth is picked up by a microphone placed in front and outgoing and a receiver.
I do not possde the pedals but the other guitarist in my band a possde.

UTILIZATION

The configuration is not simple because you have a mic attached to the pipe. In addition it is necessary to position the microphone reussire good distance to pick up a good sound.
Apart from this detail it is easy to use the hose is put on plays and is modulated by opening and closing the mouth.

SOUND QUALITY

The micro level that comes with re-enters the pedals and therefore falls on the guitar amp which is not great.
It is best to use it as a truth is said to bring out the sound with a microphone singing its song is connected to an amp the sound is much better.
Now I can not compare with the dunlop.

OVERALL OPINION

Its plus point is the report quality price.
The negative stuff it takes to get u good sound.