I have set Tunelab to exactly 528Hz and am playing it (on my HTC Universal phone) through a pair of laptop speakers on my desk. I don't THINK it is repairing my DNA (and I don't know in any case in what ways my DNA needs repairing). The sound from Tunelab via my laptop speakers is RELATIVELY "pure" as a 528Hz tone. It doesn't seem any more or less pleasant to listen to than any other tone around 500Hz. Of course, the issue is not wheather one can HEAR the tone. Is it? I asssume the DNA repair is supposed to take place even for totally deaf persons, if it takes place for DNA isolated in a laboratory dish? Notably, the 528Hz guy does not seem to stipulate what Sound Pressure Level is needed, for the repair effect to take place. Nor the required duration of the exposure. The tone has cut off now, and I think I like the silence better. There are some Yahoo clips relating to this 528Hz nonense. None of them has just a single tone - they are all rather "new age music-y", and most certainly not confined to 528Hz.
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