That is exactly the way I have felt in my times in the mental anechoic chamber - like I could see myself clearly. Some people do not seem to have all that noise in the background which probably has a lot to do with childhood however, I don't think it's out of reach for everyone. I plan to build one of the TDCS devices soon and experiment with it myself which I will report back on. My gut feeling is that it probably accomplishes something similar to meditation. When we have stress, I think our brain tenses up and in a sense becomes a hard surface for all troubling thoughts to bounce off of creating a cacophonous fog of mental noise. In a relaxed and placid state stray thoughts simply dissipate their energy having a shelf life shorter than grocery store sushi.
Clearly my opinions are not based on scientific research but rather gut feelings and existential pondering. Hopefully I'll get a device built soon and be able to have some data of my own to add to the growing number of people experimenting with TDCS. Ultimately though, if the same effect can be accomplished through meditation, I would prefer that since I prefer the any method for mental and spiritual health that is self contained.