Since I use the Sony MDRDS6500 (7.1 headphones) for my home theater, had now her headphones dedicated to music. I opted for the devil AIRY, I ordered not on Amazon, but directly in hell. Through the easy payment via Paypal the headphones was also immediately sent the next working day. After placing the first I have to say, it is conveniently located, not too tight but firmly on the head. So that nothing slips even while jogging. No more cables at the more you get stuck, or in-ear headphones that constantly fall out. The ear cushions are soft on the ears and umbrellas very well outside noise. The connection to the iPad (4G) and the iPhone via Bluetooth 6 went smoothly. The sound is devilishly good for this price range. Since I love to hear Heavy Metal, by Bloodbound about Primordial and Amon Amarth you get the whole load of drums and guitar riffs clean transported to the ear canal. The sound is very clear and not distorted. Also at a slightly higher volume. The bass is nice and not too overexcited. Battery life keeps the manufacturer up to 20h. I can not say much because I have not tested this on the speakerphone, unfortunately. Otherwise, I can recommend the devil AIRY for anyone who wants to set for affordable money good headphones, with good sound characteristics.