The Sennheiser IE 8is are a newer pair of in-ears that have a few interesting features. With eight different sets of sleeves and optional ear-loops, it's not hard to see that Sennheiser really tries to make the listening experience a comfortable one. Despite their great features, like a microphone and detachable ear buds, and good audio performance, they're a bit pricy at $450.
|Impedance (at 1 kHz)||16.0 Ohm|
|Frequency Low||10 Hz|
|Frequency High||20000 Hz|