This headset has an incredible efficiency. I use it on my Iriver H320. I'm excited. Even without EQ sounds of headphones with the smallest volumes already completely vigorously. The sound is awesome. As a sound engineer I must add at this point that I would not take me the phone for mixing, because it does not work 100% straight. But for normal listening on MP3 player accomplishes the unit for this price range wonders. He dissolves clean and the bass performance is fantastic. Only the heights are not very accurate, detailed, but present and pleasant at all volumes. Hab small ears and was afraid that the member would exert too much pressure. The opposite is the case. The listener sits completely comfortable in the ear.
