It does a good job as a DAC for my starving student amp. Eventually, I will probably upgrade but it works well enough. It is nice that it powers off of USB and doesn't take up tons of space.

The review is based on the stock pads, not based on the upgraded velour pads.
The only problem with the sound quality is a weird color in the upper mids, around vocal range.  This is due to the stock pads that come with the headphones and must be replaced or modded.
They sound fantastic other than that but they just are not comfortable if you're not used to planars.
I expect these will grow on me, especially when I get the pads replaced.
 
Update:
Since modding and swapping pads on these headphones I must say it unlocked the true potential for these headphones.  Jergpad mod or velour pads will significantly improve their sound.

The 880s don't have a lot of color to themselves. They're light comfortable cans that get the job done.  They are a well rounded headphone good for someone who can't quite figure out what kind of music they like best.