These are very good headphones. If you don't need "basshead bass", just accurate , crisp bass , then these are for you.
Although they are comfortable around the ears, they are very heavy, not too big of a deal imo, the quality of sound and overall design of the headphones makes it alright.
Amp is not really required due to the low ohms on these too.
 
I opted to return them tho, as the bass was not powerful enough and they were too heavy.
if they had basshead bass and werent so heavy, they would be perfect.