The W-Series headphones sit on your ears rather than around them, so there's not much noise isolation. This tends to be more of a problem for those in your vicinity, with the audio escaping out to disturb anyone sitting nearby. Still, it's certainly less likely to irk fellow passengers on a tube or bus than blasting your 'tunes' out of your phone's speaker, which should clearly be a hanging offence.
When it comes to audio performance, the Audio Chi W-Series offer, to my tastes, a better sound than the WeSC Bongo Art Marok headphones we looked at. There's a full, but not overpowering, bass response, and decent mid-range clarity. The very high end could be a bit sharper, but at this price point you're never going to get everything.
The W-Series can't compete with the likes of the Sennheiser HD 485 headphones for clarity of reproduction, but the W-Series are much less cumbersome, making them a notably practical offering that you might be more willing to wear - an oft-neglected consideration.
Similarly, if you were spending a bit more on a pair of Grado SR60i 'phones, the difference in sound quality would be marked. But as fantastic as the Grados are, they're far too fragile-feeling to carry out and about. Plus, some would argue that the signature sharpness of the Grados is too harsh to listen to for extended periods of time.
As much as other headphones may sound better, the W-Series' design tailors better to real world considerations such as plugging into a device with a 2.5mm jack, or storing your headphones in a backpack when not it use. And besides all that they're available in pink, which is all that really matters, right?
The appeal of the Audio Chi W-Series is primarily going to be their styling. It’s a pleasant bonus, therefore, to find that they also have a decent serving of substance to go with it.