impedance of sansa e250

what’s the impedance of sansa e250?

http://forums.sandisk.com/sansa/board/message?board.id=clip&thread.id=19390

answered by marqck

it’s 16ohms. 32 will work fine but higher than 32 will give you some crackling noise. 32ohms will not be as loud as the 16ohms earphones.

thanks