AKG k601 and portable amps

[Serpentongue]

I've recently acquired a pair of AKG k601s from a friend. According to him, these things need a really good amp to work with.

What I want to know is just how powerful of an amp must I get to run those well. I hope I can get a portable amp for this purpose. I'd greatly appreciate any recommendations.

No 'audiophile' nonsense, though. There's a reason why I love these forums so much more than Head-Fi.

I currently own a Sansa Fuze and a pair of Grado SR80s, if that helps. Thanks a lot in advance!

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