I tested a couple of times in sports these headphones. First the many positive aspects. Comfort and design I find it very successful. Very comfortable during extended wear. There nothing slips. Clear is a slightly hot under it, but if you do not get along playing sports with something then you should not On-Ear / Over-Ear Headphones Buy. Now my main criticism, the sound. I am very musical, never spend the night with technology but actually aware of the sound equipment. So far I have also only the Apple uses headset for sports, so I'm not very spoiled. The Soul Transform the excessive bass I was very disturbed, because in my opinion the actual sound is distorted and the quality of the songs suffer greatly. Only the rumbling, low mids, weak highs, for me at such a muffled sound simply not listening pleasure possible. Has totally demotivated me playing sports. Have now which of Noontec that press something on the ears, but to my mind have a balanced, rich, surprisingly clear sound. And at half the price. The Soul Transform therefore unfortunately go back.