I've always been a big fan of music, and up until a few years ago, I underestimated the difference in sound quality with different types of headphone. I was the type of guy to buy an ipod and use the apple white ones until they (inevitably) broke. Since discovering the difference between mediocre and high quality headphones, I quickly converter to out of ear headphones - they can deliver a lot more bass. But, the drawback of out-of-ears is inconvenience and maneuverability, and for that reason I had always kept in ear headphones, and owned this model for a while.
The quality of the bass driven through this is incredible for the size of the headphones - near out of ear headphone power! They produce a crisp, clear sound without missing too much of the "final recording of the song" quality. Another good point about these headphones is that they actually fit in your ears COMFORTABLY, I think a lot of headphone manufacturers focus only on the sound system, which is of course the priority, but worth nothing if the headphones are too irritating to even place in your ears!
Overall, well done radiopaq, a great success!