PIONEER Enclosed Dynamic Headphones SE-M531
Замечательное звучание Pioneer- excellent. Очень приятно
Great and soft sound quality (more high frequencies) especially for this price, convenient , very pleasant gift
Beyerdynamic DX160iE DX160 Professional Hi-Fi In Ear Headphone Free Shipping/BK
It's high excellent quality sound headphones, more good that Koss spark
Koss Spark Plug The Plug Black In-Ear Isolation Headphones for iPOD MP3 Earbuds
sound item ' quality
The sound item ' quality is rather good around 4+ (5 levels scale). I compared item with Beyerdinamic 160 that have 5+ (5 levels scale). It's not bad for Koss and smartphone's music.