Hello all, and thanks in advance for the help. I recently ordered the HE-500's, and am trying to decide whether I should keep them or not. The card's specs are here: http://www.soundblaster.com/products/sound-blaster-zxr.aspx#specs
In short, the card has a 600 ohm 80mw headphone amp, the TPA6120. I have looked extensively, but can find literally no information as to how well (if at all) this card can drive high-end headphones. The HE-500's (http://www.head-direct.com/Products/?act=detail&id=102) are 38 ohms and, although I'm familiarized myself with the math of relating ohms to watts, I can't find anything that suggests how much power the headphones actually want. I am new to the audiophile world, and I don't have any other amps or DAC's or anything so I will have no way of knowing if my headphones sound underpowered or not.
I would really prefer to not have to buy another separate headphone amp since I just splurged on this brand new sound card which supposedly features a great amp, but this answer will help me decide whether to just get the HE-400's instead, keep the HE-500's as-is, or get a different headphone amp (probably the Schiit Magni or something). Even if I WAS to opt for the last solution, however, I'm not even sure that my sound card will accept having a different external amp connected to it.
Basically, I suppose I'm just wondering if anyone has knowledge of this hardware or can do some math that is evading me and tell me whether or not the ZXR can adequately drive the HE-500's. Thanks again!