
I tryied 10+ i-doser doses but in all of them, except multipleO , i hear loud humming (somewhere extreme loud somewhere not too much). In binaural sounds from Youtube i didnt hear it, just from i-doser.
I heard it in both headphones and even in PC loudspeakers.
My better headphones are http://www.usa.philips.com/c/headphones ... 28/prd/en/
Some advice to avoid humming ?

Sorry for my english.