Yes, that's what I meant :). Thanks.

Wait, so it IS possible to use the iPhone as a usb DAC? I don't mind using a hub to get it working.

Thanks for all the info. Since I'm not using In-Ear Heaphones, I guess the regular E12 would be more suitable.   I wonder why the iPhone wouldn't work with the X3? Is it because it draws too much power from the iPhone?

I'm new here, IEM = portable amp? :)

I tried it the audio technics but didn't like the sound. It feels a little like cheating to me :), I was an a headphone amp not a digital amp. I'll try tonight and see how it goes.

I have the X3, loved it with my audio technica m50, but we was underwhelmed with the seinhheizer HD 598. It lacks the amplification to drive these headphones to good levels. Few questions: - would it be considerably better to get the e12 as additional amp, or would I be better in terms of...