[Tobias89]

Hi all! I recently got an SE846. I am using it straight out of an ipod touch for now, and will be intending to purchase a DAP that isn't too expensive (around USD500) for it soon. However, I have no idea what does impedence means, and how does the impedence of a DAP affect the impedence of an IEM such as the shures SE846? 
 
Also, anyone has recommendations on what DAP matches best with the SE846?
 
Thanks in advance!