This is gonna be a simple review

BASS
For a $7 in ear it is actually really good. A little overbearing at times but quite articulate considering the price. 

MIDS
They are not airy and vocals by no means sound lifelike but they are clear and not muddied by the elevated bass.

HIGHS
This is where this in ear does not shine. It is extremely recessed around the 10kHz to 14kHz range so cymbals are quiet as hell. It has a very metallic sound to it as well but it is cheap so it is expected.

SOUNDSTAGING 
The staging on this is pretty bad so don't expect a room like delivery of sound

COMFORT
Really good actually. It is super light and the "ergo-fit" actually works. Easy to wear for hours and you can even sleep with it in due to the low profile.

BUILD
Pretty cheap lol. The cables are flimsy but the jack area seems pretty sturdy. 

FINAL THOUGHTS
It is a pretty good in ear that actually stays in your ears even during heavy motion. It may be synthetic sounding and it might be a little low sensitivity in ear but for the price I would say it is pretty good. But remember it is CHEAP 

This headphone sounds great and looks great as well. I have had this headphone for a couple months and no change in sound has occurred so this does not require burn-in.

The sound is V-shaped indeed but if you require a flatter response this headphones responds to and EQ very well. The treble is oh so detailed and is amazing for metal and rock. The bass is slightly emphasized and it decays really well to give that satisfying rumble. The only complaints are really the background sound to vocals and sometimes guitar instruments and the cable. They are clear and detailed but they are not forward due to sound signature.

This can is a marvel for electronic music however with the slightly emphasized yet tight bass. I don't what Creative Labs were thinking when they decided to use a 2.5 connector into the headphones. This seriously limits cable replacement options down to the replacement cable for the HD518, 558 and 598. The thing I absolutely love this headphone is for the ability to drop you into a space. The imaging for a closed can is so spacious. After a couple months of use the pivot points on the headband have scraped away the silver coating from repeated grinding. The build is not like a tank but they can take a beating as I have dropped it on numerous occasions.

Much like the older Creative Aurvana Live! I found these to be a great headphone for all genres with a laid back kind of dark and warm sound.