Our Verdict 
Although the bass lacks true authority, they deliver clear and detailed vocals and decent dynamism
For 
Decent dynamism
clear and detailed vocals
well controlled treble
Against 
Hook design sits a little distance from your ear holes
Reviewed on

This pair of Sennheisers is a hook design that, while secure on your ear, feels a little vague in your lughole.

There's also a degree of vagueness to the delivery, and the bass lacks true authority, but vocals are very clear and detailed, and there's a sparkly, well controlled treble plus decent dynamism.