there is no automatic so i set it to 192  

on my sound card i have the option to change the sample rate to say PCM 192 KHz to PCM 44.1 KHz  

what does changing the bit do, and what about PCM rate  

the 558 and the 518 use the exact same driver (i checked, some guy on this forum posted pictures of the drivel model numbers), the main difference is the cup design and materials, so they would respond the same, and i already ordered the headset (as soon as you guys confirmed the DX and the...

Quote: say i was to grab a headphone amp, which would you choose, and would it make a large difference   EDIT: would the Schiit Magni be a good choice

i'm massively confused with all this Ohms and Vrm and SPL stuff, so maybe someone could clarify what they are, and if the DX can drive those headphone(some say they can others say no,so?),and also who/what is OP   this line confuses me: Quote:

thank you very much for clarifying that, just curious what does a headphone amp do, increase the impedence that the signal from the sound card has or does it increase voltage of the output of the card (or both), and when is one necessary  

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1)I have an asus xonar dx and i was wondering if it could power the HD518's 2)it would also be nice if someone could explain to me what a headphone amp can do (ex: do they even help with low impedence headsets?) 3)if you had a better choice of a sub $150 headset (preferably around $125) that...