PolygonI've seen some positive buzz about this on on Head-fi in random threads (like the Soundmagic HP100/150 thread). I like that this will charge your device AND amplify. If I actually used my portable setup more, I'd be very tempted by this.
Anyone know how it sounds compared to the Fiio E12?
Reviews: http://www.head-fi.org/products/cayin-c5-portable-hifi-audio-headphone-amplifier/reviews
Further Specs/Info: http://www.noisymotel.com/product.asp?ProductID=761