The best features on these headphones are the soft foam cushions – they can easily be pinched and twisted to fit into your ear and will then expand slowly to provide a custom fit inside your ear canal. What all this means is that the Koss Sparkplug in-ear headphones directs sound into the ear canal - improving sound isolation, enhancing deep bass and treble clarity, and eliminating most ambient noise too like car traffic.

In addition, the Sparkplug features a dynamic element for extended frequency response, replacement ear cushions and is finished with a white cord that compliments many MP3 players.